https://wiki.linked.earth/wiki/api.php?action=feedcontributions&feedformat=atom&user=Jrichey 2026-04-04T12:32:54Z User contributions MediaWiki 1.26.3 https://wiki.linked.earth/wiki/index.php?title=Category:Lake_Sediments_Working_Group&diff=17981 2017-04-24T14:40:09Z

<p>Jrichey: /* Sediment */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''lake sediments''' (see [[:Category:LakeSediment | this page]] for a definition of the lake sediment archive), and aims to formulate a set of recommendations for such a standard. Note that chronological aspects should be discussed within the [[:Category:Chronologies_Working_Group|Chronologies WG]]. <br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> Thinking about data standards for lakes is a challenging task because of the incredible diversity of observations made on this archive. To start this process, the working group will focus on developing standards for the one variable in lake sediments that all scientists rely on: depth.<br /> <br /> After we've done this process for depth, I suggest we reach out and broaden this group to include broad expertise of different sensor and observations types. A preliminary list is presented below.<br /> <br /> == Task 1: Depth ==<br /> How should we report depth?<br /> <br /> For this discussion we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * provide an '''ideal data table''' for each type of observation, so the community knows what to report and how to report it.<br /> * provide separate recommendations for new and legacy datasets<br /> <br /> === Sample Depth ===<br /> <br /> In all cases, most simply, we want to report the geometry of a sample from a core. This requires two pieces of information, typically this is either the mid-point depth and thickness, or top and bottom depth. Each has its advantages:<br /> <br /> *Top and bottom depth is more explicit and self explanatory, but typically requires an additional step to use for analysis<br /> *Mid-point depth is more typically reported, and is what is needed for most age models, but can be ambiguous<br /> <br /> [[File:LakeSediment Depth TwitterPoll.png|thumb|right|Results from Twitter Poll (3/14/17 to 3/21/17)]]<br /> <br /> &lt;poll&gt;<br /> What should be the primary way of reporting depth of samples taken from lake sediments:<br /> Mid-point depth and thickness<br /> Top and bottom depth<br /> Something else<br /> &lt;/poll&gt;<br /> <br /> '''The wiki and twitter polls indicate a slight preference for mid-point and thickness'''<br /> <br /> === Dealing with multiple cores ===<br /> Commonly, multiple cores are used in a study that each have their own depth scale (&quot;Core Depth&quot;) and using various methods, those depths are converted to &quot;Composite Depth&quot;, which is used for most of the scientific inference. This is important additional information. We want:<br /> <br /> #Mid-point depth (Core Depth)<br /> #Mid-point depth (Composite Depth)<br /> #thickness<br /> <br /> and ideally, we want to store the necessary information that describes the relationship between core depth and composite depth.<br /> <br /> LacCore (and others) use splice and affine tables to accomplish that.<br /> <br /> Add a description and discussion of splice and affine tables for discussion here.<br /> <br /> ===Depth Datum===<br /> For both core depth and composite depth, we need a datum for depth. Most typically, this is the top of the sediment in each core, for core depth (where depth=0), and is the sediment surface for composite depths. Sometimes, depth from the lake (water) surface is used. <br /> <br /> We need to either<br /> <br /> *Describe what datum is being used for each depth measurement<br /> OR<br /> *choose a universal datum and force datasets to adhere<br /> <br /> Or we could do both.<br /> <br /> == Sensors ==<br /> <br /> Sensors in lakes fall into several different categories<br /> <br /> === Sediment ===<br /> Several observations can be made on sedimentary sensors including:<br /> *grain size<br /> *mineralogy<br /> *geochemistry<br /> **bulk organic carbon concentrations<br /> **bulk inorganic carbon concentrations<br /> **bulk nitrogen concentrations<br /> **C:N<br /> *isotope geochemistry<br /> **bulk organic carbon isotopic composition<br /> **bulk inorganic carbon isotopic composition<br /> **bulk nitrogen isotopic composition<br /> **Compound Specific Isotopic Analysis (CSIA)<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for Compound Specific Isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |-<br /> | Compound(s) analyzed || E || e.g., n-alkanes, FAMEs, alkenones, dinosterol || [[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |-<br /> | Source of compound in sediments || R || Is this compound marine/aquatic or terrestrial in origin? || [[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |- <br /> | Isotope measured || E || e.g., ∂2H, ∂13C, ∂15N ||[[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |-<br /> | Environmental Parameter CSIA is sensitive to || R|| Is the CSIA sensitive to salinity, precipitation, E-P, productivity, temperature? ||[[User:Jrichey|Jrichey]] ([[User talk:Jrichey|talk]]) 07:40, 24 April 2017 (PDT)<br /> |- <br /> |}<br /> <br /> === Aquatic organisms ===<br /> Several sensors may be found in lakes including<br /> *Diatoms <br /> **may contribute silicic microfossils and biomarkers<br /> *Ostracods<br /> **may contribute carbonate microfossils<br /> *Algae<br /> **may contribute biomarkers, including alkenones<br /> *Archaea<br /> **may contribute biomarkers, including GDGTs<br /> *Bacteria<br /> **may contribute biomarkers, including GDGTs<br /> *Fish<br /> **may contribute macrofossils, including otoliths<br /> <br /> === Terrestrial plants ===<br /> Plants growing around the lake and in the catchment of the lake may contribute macro and microfossils as well as biomarkers to the sediments. Plants are the sensors of the environment and the observations include:<br /> *Organic geochemical biomarkers:<br /> **plant wax n-alkanes <br /> **plant wax n-alkanoic acids<br /> **plant wax n-alkanols acids<br /> **plant wax terpenoids<br /> **lignin<br /> *Macro/microfossils<br /> **pollen<br /> **leaf<br /> **wood<br /> **charcoal<br /> <br /> === Insects ===<br /> Several sensors in the air above and around lakes may leave microfossils in lake sediments, these include<br /> * chironimid tests, these are organic microfossils<br /> <br /> == Polls ==<br /> <br /> Here are polls that the group might want to consider:<br /> <br /> <br /> ==References==<br /> &lt;references \&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16931 2017-04-20T19:36:28Z

<p>Jrichey: /* Alkenones */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> [[File:TwitterPoll MarineSediments calibrationequation.png | thumg | right | 400px | Results of the poll run on Twitter from April 11th to 18th 2017]]<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for Alkenones<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Uk’37 index|| E || Unsaturation index of C37 alkenones || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |- <br /> | Analytical Precision|| E || Based on replicate injections of samples or standards || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |- <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || D || Peak areas of C37:2 and C37:3 (and possibly C37:4 and C38 alkneones)|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | SST || R|| Sea surface temperature derived from Uk’37 index||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | SST Calibration used|| R|| Method of converting Uk’37 to SST||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Alkenone Concentration|| D|| Calculated concentration of alkenone||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |}<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> <br /> | Were core lipids or IPLs analyzed|| E || Were the GDGTs measured on Intact Polar lipids or core lipids? || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |- <br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || As other indices are developed, this allows new information to be calculated from archived data || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Definition of the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16843 2017-04-20T19:26:08Z

<p>Jrichey: /* GDGTs */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> [[File:TwitterPoll MarineSediments calibrationequation.png | thumg | right | 400px | Results of the poll run on Twitter from April 11th to 18th 2017]]<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for Alkenones<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Uk’37 index|| E || Unsaturation index of C37 alkenones || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || D || Peak areas of C37:2 and C37:3 (and possibly C37:4 and C38 alkneones)|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | SST || R|| Sea surface temperature derived from Uk’37 index||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | SST Calibration used|| R|| Method of converting Uk’37 to SST||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Alkenone Concentration|| D|| Calculated concentration of alkenone||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |}<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> <br /> | Were core lipids or IPLs analyzed|| E || Were the GDGTs measured on Intact Polar lipids or core lipids? || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |- <br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || As other indices are developed, this allows new information to be calculated from archived data || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Definition of the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16838 2017-04-20T19:16:02Z

<p>Jrichey: /* Alkenones */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> [[File:TwitterPoll MarineSediments calibrationequation.png | thumg | right | 400px | Results of the poll run on Twitter from April 11th to 18th 2017]]<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for Alkenones<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Uk’37 index|| E || Unsaturation index of C37 alkenones || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || D || Peak areas of C37:2 and C37:3 (and possibly C37:4 and C38 alkneones)|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | SST || R|| Sea surface temperature derived from Uk’37 index||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | SST Calibration used|| R|| Method of converting Uk’37 to SST||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Alkenone Concentration|| D|| Calculated concentration of alkenone||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |}<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> <br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || As other indices are developed, this allows new information to be calculated from archived data || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Definition of the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16837 2017-04-20T19:12:55Z

<p>Jrichey: /* Alkenones */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> [[File:TwitterPoll MarineSediments calibrationequation.png | thumg | right | 400px | Results of the poll run on Twitter from April 11th to 18th 2017]]<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for Alkenones<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Uk’37 index|| E || Unsaturation index of C37 alkenones || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || D || Peak areas of C37:2 and C37:3 (and possibly C37:4 and C38 alkneones|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | SST || R|| Sea surface temperature derived from Uk’37 index||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | SST Calibration used|| R|| Method of converting Uk’37 to SST||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Alkenone Concentration|| D|| Calculated concentration of alkenone||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |}<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> <br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || As other indices are developed, this allows new information to be calculated from archived data || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Definition of the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16836 2017-04-20T19:12:24Z

<p>Jrichey: /* Alkenones */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> [[File:TwitterPoll MarineSediments calibrationequation.png | thumg | right | 400px | Results of the poll run on Twitter from April 11th to 18th 2017]]<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for Alkenones<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Uk’37 index|| E || Unsaturation index of C37 alkenones || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || D || Peak areas of C37:2 and C37:3 (and possibly C37:4 and C38 alkneones|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | SST || R|| Sea surface temperature derived from Uk’37 index||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> | SST Calibration used|| R|| Method of converting Uk’37 to SST||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Alkenone Concentration|| D|| Calculated concentration of alkenone||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |}<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> <br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || As other indices are developed, this allows new information to be calculated from archived data || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Definition of the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16835 2017-04-20T19:11:47Z

<p>Jrichey: /* Alkenones */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> [[File:TwitterPoll MarineSediments calibrationequation.png | thumg | right | 400px | Results of the poll run on Twitter from April 11th to 18th 2017]]<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for Alkenones<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Uk’37 index|| E || Unsaturation index of C37 alkenones || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || D || Peak areas of C37:2 and C37:3 (and possibly C37:4 and C38 alkneones|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | SST || R|| Sea surface temperature derived from Uk’37 index||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> | SST Calibration used|| R|| Method of converting Uk’37 to SST||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> | Alkenone Concentration|| D|| Calculated concentration of alkenone||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |}<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> <br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || As other indices are developed, this allows new information to be calculated from archived data || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Definition of the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16827 2017-04-20T16:14:36Z

<p>Jrichey: /* GDGTs */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> <br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || As other indices are developed, this allows new information to be calculated from archived data || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Definition of the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16826 2017-04-20T15:56:59Z

<p>Jrichey: /* GDGTs */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || There are other indices (e.g., ring index) that can be derived from the raw peak areas|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Define the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16825 2017-04-20T15:55:52Z

<p>Jrichey: /* TEX86 */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || There are other indices (e.g., ring index) that can be derived from the raw peak areas|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | GDGT index || E || One or more GDGT-based index must be provided (e.g., TEX86, BIT, MBT, CBT, RI, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> |-<br /> | Define the index used || E || The definitions of indices can change over time. If raw peak areas are not provided, then the equation used for the calculated index needs to be provided ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> |-<br /> | Derived Parameter|| R || Environmental parameter that GDGT index is calibrated to (e.g., SST, MAT, pH, etc.)||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> <br /> | Calibration used for conversion of GDGT index to environmental parameter|| R || Which calibration was used to convert TEX86 to SST, for example||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=16824 2017-04-20T15:27:29Z

<p>Jrichey: /* GDGTs */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_(L)]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below.<br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_(L)]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_(L)]].<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment CalibrationReferences.png|thumb|400px|right|Results of the poll conducted on Twitter from April 2nd to 9th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> Archived poll<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment Compilation.png|Thumb|400px| right | Results of the poll on Twitter ran from March 29th 2017 to April 5th 2017]]<br /> <br /> New poll includes both option:<br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> both<br /> &lt;/poll&gt;<br /> <br /> <br /> LinkedEarth identifies each series using [[:Property:HasVariableID_(L)]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion (L)| here]] and use the Discussion page to comment.<br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument (L) | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment GearType.png|thumb|400px|right|Results of the poll ran on Twitter from April 7th to 14th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc. This is the [[:Category:Interpretation_(L)]] field in the current LinkedEarth ontology.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> [[File:TwitterPoll MarineSediment Bulk Pretreatment.png|thumb|400px|right|Results of the poll put on Twitter from April 4th to 11th 2017]]<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the sample pretreatment be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the analytical method be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the measurement parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the units of measurement be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the method reference be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For new datasets, when reporting bulk sediment measurements, should the environmental parameter be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediment NumberOfSpecimens Isotope.png|thumb|400px|right|Results of the poll ran on Twitter from March 31st to April 7th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll Foram StableIsotope SizeFraction.png|thumb|400px|Poll ran on Twitter from 3/21/17 to 3/28/17]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls ForamsMgCaCleaningMethod.png | thumb | 400px| Results of poll ran on Twitter 3/24/17-3/31/17]]<br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca? <br /> Correction to changes in seawater Mg/Ca ratio over time [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 17:04, 31 March 2017 (PDT)<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPolls MarineSediment MgCa ContaminationIndicators.png | thumb|right|400px|Results of the poll ran on Twitter from April 10th to 17th 2017]]<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt (L)]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_(L)]] [[:Property:SensorSpecies_(L)]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard (L)]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====TEX86====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_(L)]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt (L)]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || There are other indices (e.g., ring index) that can be derived from the raw peak areas|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | TEX86 index || E || It is essential that the TEX86 index data are available - not just derived temperature values ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |}<br /> <br /> [[File:TwitterPoll TEX86 RawPeaks.png|thumb|400px|Results of the poll ran on Twitter from March 28th 2017 to April 4th 2017]]<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets, should the TEX86 index be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the depth information in the archive be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and new datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediments and legacy datasets based on TEX86, should the method of sediment extraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> For polls regarding the analytical precision, see the [[:Category:Uncertainty Working Group | Uncertainty Working Group]] page.<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> [[File:TwitterPoll MarineSediment RawCount MircopaleontologicalData.png|thumb|400px|right|Results of the poll ran on Twitter between April 5th to 12th 2017.]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll MarineSediments SensorSeasonality.png|thumb|400px|right|Results of the poll ran on Twitter from April 3rd to 10th 2017]]<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the method (MAT, WA-PLS, etc) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For micropaleontological data, if the data were used to infer temperature or sea ice concentration, should the training set be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=15954 2017-03-28T19:50:59Z

<p>Jrichey: /* Bulk Sediment Geochemistry */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_©]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below. <br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_©]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_©]].<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> LinkedEarth identifies each series using [[:Property:hasID_©]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion ©| here]] and use the Discussion page to comment. <br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument © | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table: Essential/Recommended/Desired Metadata for Bulk Sediment Geochemistry<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt ©]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Sample Pretreatment || R || Freeze-dried, ground in mortar and pestle, acid-washed, microwave digestion, pressed pellet, glass bead, sieved, scraped core surface and x-ray transparent film, thin sections [single or double-polished, thickness, epoxy type, mounting medium] || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison<br /> |-<br /> | Analytical Method || E|| ICP-MS, XRF, scanning XRF, wet chemistry spectrophotometry, INAA, micro-XRF, electron microprobe, HCNS elemental analyzer, carbonate coulometry|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Measurement Parameter || E || i.e., Mg to U, Mo, opal, TOC, CaCO3, C/N, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Units of measurement || E || wt%, ppm, x-ray intensities (counts per second) || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |-<br /> | Method Reference || R || Literature Reference for analytical method || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 following suggestion of Jason Addison <br /> |- <br /> | Environmental Parameter || D || For instance, is the geochemical proxy sensitive to upwelling intensity, salinity, temperature, terrestrial input, etc.|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 28 March 2017 <br /> |-<br /> |}<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt ©]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard ©]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard ©]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca?<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt ©]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard ©]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || There are other indices (e.g., ring index) that can be derived from the raw peak areas|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | TEX86 index || E || It is essential that the TEX86 index data are available - not just derived temperature values ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> <br /> |}<br /> <br /> <br /> <br /> <br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=15953 2017-03-28T17:49:38Z

<p>Jrichey: /* Geochemical Data */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_©]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below. <br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_©]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_©]].<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> LinkedEarth identifies each series using [[:Property:hasID_©]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion ©| here]] and use the Discussion page to comment. <br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument © | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Bulk Sediment Geochemistry===<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt ©]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard ©]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> [[File:TwitterPoll ForamStableIstopes GenusSpeciesInfo.png|thumb|500px|Results of the poll placed on Twitter between March 20th and March 27th 2017]]<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard ©]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca?<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt ©]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from seawater values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard ©]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || There are other indices (e.g., ring index) that can be derived from the raw peak areas|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | TEX86 index || E || It is essential that the TEX86 index data are available - not just derived temperature values ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> <br /> |}<br /> <br /> <br /> <br /> <br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=15930 2017-03-22T19:59:48Z

<p>Jrichey: /* GDGTs */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types.<br /> <br /> == Previous standardization efforts==<br /> <br /> A discussion regarding paleoclimate data standards was started during the [http://www.pages-igbp.org/science/science-2009-2014/foci/focus-1/meetings/127-pages/876-pmipocean PMIP Ocean Workshop: Understanding changes since the Last Glacial Maximum] (hereafter, PMIP_LGM) in Corvallis, OR in December 2013. Given the expertise of the working group members, the discussion focus on sedimentary archives. Meeting notes can be found [[:File:Reporting Standards for Paleoceanographic PMIP3 Dec2013.docx | here]] and summarized in the sections below.<br /> <br /> The recommendations made at the workshop concerned new datasets only. It was recognized that different sets of standards would be necessary for legacy datasets. <br /> <br /> === Types of Data ===<br /> There are three principle types of data that are relevant for the paleoceanography/paleoclimatology community:<br /> <br /> ====Original data values====<br /> this would include raw values of all variables measured or otherwise determined on the substrate of interest, recorded against an unambiguous sample identifier (for instance, depth in the archive). This includes age control points (ACP) used to derive the age model of the paleo-time series, including radioisotopes (14C, excess 210Pb), and benthic stack comparison. All data that are reported for the first time in a scientific publication should be treated as original. The procedure of obtaining original data should be documented such as to allow full replication of the results. In the [[LinkedEarth Ontology]], the original data values are referred as [[:Category:MeasuredVariable_©]].<br /> <br /> &lt;poll&gt;<br /> Should the &quot;unique sample identifier&quot; identified at the PMIP_LGM workshop be:<br /> depth in the sedimentary archive<br /> a unique sample code, depth being one of the parameters attached to this code<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> At the PMIP_LGM workshop, it was proposed that the unique sample identifier consists of the name, geographical coordinates, water depth of the sediment core in addition to the position of the analyses sediment segment in the core. Is this labelling:<br /> Appropriate<br /> Too specific<br /> Should be replaced by a random sequence<br /> &lt;/poll&gt;<br /> <br /> Depth can be problematic as a unique identifier since there are several to calculate or report depth in a sample (i.e., top-depth, mid-depth, depth interval.) and IODP uses several [http://csdco.umn.edu/sites/csdco.umn.edu/files/iodp_depth_scale_terminology_v2-3.pdf depth scales].<br /> <br /> &lt;poll&gt;<br /> In the case where depth is reported for sediment cores, should we report:<br /> top depth<br /> mid-depth<br /> depth interval (i.e., top + bottom depth)<br /> interval thickness<br /> all of the above<br /> &lt;/poll&gt;<br /> <br /> [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:29, 7 March 2017 (PST): I probably forgot ways of expressing depth, please add comments below. <br /> <br /> ==== Derived data values====<br /> this category refers to values of variables derived from other variables, derived or raw, original or compiled, reported against an unambiguous sample identifier and accompanied with a documentation of the derivation procedure such as to allow full replication of the result. This category includes algorithms of any kind relating depth to age that have been used to assign ages to values of raw or derived variables. In the [[LinkedEarth Ontology]], derived data values are referred to as [[:Category:InferredVariable_©]]. <br /> <br /> The derivation procedure is contained in the [[:Category: CalibrationModel_©]].<br /> <br /> &lt;poll&gt;<br /> For marine sediment cores, should the calibration model be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the code used in the calibration of marine sedimentary records be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the calibration Publication information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compilation of data values==== <br /> this refers to raw values of all variables from published sources, gathered for the purpose of quantitative treatment, recorded against an unambiguous sample identifier and labelled with an unambiguous reference to the publication where such data were originally presented. Reporting of data compilations is required wherever these are used to derive patterns or variables from the data other than those reported in the original publication. <br /> <br /> &lt;poll&gt;<br /> Should compilation of previous work involving marine sediment records report:<br /> the original publication in which the series appear<br /> a unique identifier to the time series<br /> &lt;/poll&gt;<br /> LinkedEarth identifies each series using [[:Property:hasID_©]]<br /> <br /> === Archiving===<br /> <br /> The following recommendations were made at the PMIP_LGM workshop:<br /> &lt;blockquote&gt;The data should be archived in easily accessible database administered by an editorial board. The database should included on on-line system for (1) the reporting of errors, (2) a community-driven quality flag system, and (3) the update of datasets as new data become available. Updates to a particular dataset should be assigned a version number with a link to the old and new references. The editorial board should also be tasked in identifying and archiving older datasets. &lt;/blockquote&gt;<br /> <br /> For versioning of datasets, see the proposed LinkedEarth standard [[: Property:DatasetVersion ©| here]] and use the Discussion page to comment. <br /> <br /> == Marine Sediment Standards ==<br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 1: Essential/Recommended/Desired Metadata for marine sediments <br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | Collection Method: Gear Type|| D || Some coring techniques are known to stretch/compress the cores (i.e. Marion Dufresne piston core) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Volume of sediment analyzed || D || May not be useful for all types of data measured on sediment cores. If deemed recommend or essential, insert comment/poll in appropriate section || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | Collection method: Sampling methods || D || u-channel, syringe, slice || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:17, 7 March 2017 (PST)<br /> |-<br /> | [[:Category:Instrument © | Instrumentation]] ||D || How were the MeasuredVariables measured? Desired for standard analytical techniques. Should be essential/recommended for new techniques || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:23, 7 March 2017 (PST)<br /> |}<br /> <br /> &lt;poll&gt;<br /> For marine sediments, the gear type used for the collection of the archive should be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For studies based on marine sediments, should the volume of sediment analyzed be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For marine sediment studies, should the instrument used for standard analytical techniques be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt; <br /> For marine sediment studies, should the instrument used in new protocols be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> == Geochemical Data ==<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> &lt;poll&gt;<br /> For foraminiferal geochemistry work, should information about the taxonomy being followed on top of the genus/species information be:<br /> Essential<br /> Recommended<br /> Desired<br /> &lt;/poll&gt;<br /> <br /> ==== Stable isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal stable isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Wgs84:Alt ©]] (Depth) || R || Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology(oxidative vs reductive) || R || Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Cleaning Methodology reference || D || The exact reference to the protocol used for cleaning. Added to differentiate between the actual methodology and the specific protocol. || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:05, 17 March 2017 (PDT) following a conversation with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:34, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:Standard ©]]|| E || The standard against which the measurements are reported (especially for d18O). VBDP vs VSMOW || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:41, 7 March 2017 (PST)<br /> |- <br /> | Analytical Precision || R || The machine precision based on reproducability of standards || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:49, 7 March 2017 (PST)<br /> |- <br /> | Size Fraction || R || Stable isotopes ratios have been shown to vary by size fraction in several studies || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:48, 7 March 2017 (PST)<br /> |-<br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM meeting || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:19, 7 March 2017 (PST)<br /> |- <br /> | Correction applied/Equilibration offset || R || For instance, correction for offsets in benthic species (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the location information (and water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the property standard reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For stable isotopes in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Trace Metals ====<br /> <br /> From [[User:Jfehrenbacher|Jfehrenbacher]]:<br /> <br /> &quot;The properties described under Mg/Ca can be used for the other trace elements.&quot;<br /> <br /> ===== Mg/Ca =====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the Mg/Ca community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 3: Essential/Recommended/Desired Metadata for foraminiferal Mg/Ca<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of dissolution in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties and parameters of stable isotopic parameters || [[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:39, 7 March 2017 (PST)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Species information needed to infer which section of the water column is being recorded || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Cleaning Methodology (oxidative vs reductive) || E for new datasets/ R or D for legacy datasets.|| Useful to correct for offsets, especially for compilation work although a quick plot can often help figure out the cleaning methodology || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) Changed by [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Cleaning methodology reference || D or R for both legacy and new datasets || The reference describing the specific protocol being followed (i.e., Barker et al., Martin and Lea...). Allows to differentiate between the general method being followed and the actual protocol || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:22, 17 March 2017 (PDT) after a discussion with [[User:Jfehrenbacher|Jfehrenbacher]]<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST) <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 12:37, 17 February 2017 (PST)<br /> |-<br /> | Number of specimens utilized per sample || R || The number of foraminiferal tests used per sample can be used to understand the sampling uncertainity associated with the measurements based on the signal-to-noise ratio of the climate signal at the location (planktic foraminifera live for 2-4 weeks) ||[[User:Kau|Kau]] ([[User talk:Kau|talk]]) 13:17, 7 March 2017 (PST) <br /> |-<br /> | Analytical Precision|| D || Uncertainty in the measurements || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 13:51, 7 March 2017 (PST)<br /> |-<br /> | Size fraction || R || Mg/Ca and other trace element ratios have been shown to vary with specimens size || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 15:49, 7 March 2017 (PST)<br /> |- <br /> | Method of sediment disintegration and washing || D || Brought up at the PMIP_LGM workshop || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:20, 7 March 2017 (PST)<br /> |-<br /> | Correction applied/Equilibrium offset || R || For instance, correction for offsets for cleaning methodologies (critical for compilation work) || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 16:27, 7 March 2017 (PST)<br /> |-<br /> | Seasonality || R || Necessary for compilation work especially as to not combine summer and winter ProxySensors || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Habitat Depth || R || Which part of the water column is being represented || [[User:Khider|Deborah Khider]] ([[User talk:Khider|talk]]) 11:39, 8 March 2017 (PST)<br /> |-<br /> | Contamination indicators || R || Ancillary trace element data to asses contamination (e.g. Al/Ca, Mn/Ca, Fe/Ca) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:12, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard ©]]|| D || The value of any certified reference material analysed by the lab (e.g. ECRM 752-1) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:24, 17 March 2017 (GMT)<br /> |-<br /> | &quot;Raw&quot; Mg/Ca data || E || It is essential the Mg/Ca data are available - not just derived temperature values || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 18:12, 20 March 2017 (GMT)<br /> |}<br /> <br /> To gather rapid feedback on whether the proposed metadata should be essential, recommended or optional, answer the polls below:<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the location information (especially in relation to water depth) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the sensor genus/species information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> More specific polls on cleaning methodology (see table above):<br /> <br /> &lt;poll&gt;<br /> For new datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For legacy datasets, should the cleaning methodology for for foraminifera trace elements (oxidative vs reductive) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> Should the cleaning methodology reference (i.e. the specific protocol) for for foraminifera trace elements be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the depth (position of the measurement in the archive) information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the ChonMeasurementTable information be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the numbers of specimens utilized be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the analytical precision reported be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the method of sediment disintegration be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> <br /> This question is unclear - what does equilibrium refer to for Mg/Ca?<br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the applied correction/equilibrium offset be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Mg/Ca in foraminifera, should contamination indicators (Al/Ca, Mn/Ca, Fe/Ca) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ==== Boron isotopes ====<br /> <br /> In the following table, enter the metadata that you'd wish every member of the stable isotope community would enter to make their data reproducible. To add more lines, follow this [[Quick_Guide_to_Editing_Wiki_Pages | guide]]. For a definition of Essential (E)/ Recommended (R)/ Desired (D), see [[Paleoclimate_Data_Standards | this page]]. <br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 2: Essential/Recommended/Desired Metadata for foraminiferal boron isotopes<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Wgs84:Alt ©]] (Depth) || R/E || Water depth is Recommended for planktonic foraminifera and Essential for benthic foraminferal data || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:SensorGenus_©]] [[:Property:SensorSpecies_©]] || E || Planktonic species show different relationships to d11B of borate and infuanal benthic species show offsets from equilibrium || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[Linked_Paleo_Data#ChronData_Table|ChonDataTable]] || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical Method || E || The analytical method used for seperation (e.g. Amberlite columns, micro sublimation ) and analysis (MC-ICP-MS, NTIMS) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Sample size|| R || ng of Boron analysed || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | [[:Property:Standard ©]]|| E || The values for certified reference materials, both boric acids and carbonates (e.g. JCP, JCT, AE121) || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> | Analytical precision|| E || Precision based on reproducibility of standards, may be a function of sample size || [[User:Williamrgray|William Gray]] ([[User talk:Williamrgray|talk]]) 17:29, 17 March 2017 (GMT)<br /> |-<br /> |}<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> |+Table 4: Essential/Recommended/Desired Metadata for GDGTs<br /> |-<br /> ! Metadata || Essential (E)/ Recommended (R) / Desired (D) || Reason || Added by (optional)<br /> |-<br /> | [[:Category: Location_©]] (Lat, Lon) || E || Location is a must || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> |-<br /> | | [[:Property:Wgs84:Alt ©]] (Depth) || E || Water depth can be useful to get an idea of diagenesis in the core. Especially for deep-sea drilling sediments, water depths can be important to assess various biogeochemical properties || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Sample Depth || E || Positional information needed to relate the samples back to the archive || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | ChonDataTable || E for new datasets/ R for legacy datasets || The raw radiocarbon, tie points, 210Pb measurements should be made available so that age models can be updated in light of new calibration curves or new age modeling techniques ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | Analytical Precision|| D || Usually based on replicate injections of a sample || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |- <br /> | Method of sediment extraction || D || i.e. ,microwave, ASE || [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | &quot;Raw&quot; Peak Areas || R || There are other indices (e.g., ring index) that can be derived from the raw peak areas|| [[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> |-<br /> | TEX86 index || E || It is essential that the TEX86 index data are available - not just derived temperature values ||[[User:Richey|Julie]] ([[User talk:Richey|talk]]), 22 March 2017 <br /> <br /> <br /> |}<br /> <br /> <br /> <br /> <br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> * Report raw counts if available. If not available, then at least report minimum number of specimens counted<br /> * Minimum number of specimens counted<br /> * Size fraction<br /> <br /> If the data were used to infer temperature or sea ice concentration, then the method (MAT, WA-PLS, etc) and the training set should be mentioned/required metadata.<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should raw counts be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data , should the number of specimens counted be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should size fraction be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the seasonality be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> &lt;poll&gt;<br /> For Micropaleontological Data, should the habitat depth be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=13056 2016-11-21T19:20:44Z

<p>Jrichey: /* GDGTs */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types:<br /> <br /> == Geochemical Data ==<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> ==== Stable isotopes ====<br /> <br /> ==== Trace Metals ====<br /> <br /> ===== Mg/Ca =====<br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> &lt;poll&gt;<br /> Should raw peak areas (as opposed to just TEX86 index) be:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> == Polls ==<br /> Here are three example polls that the group might want to consider:<br /> <br /> For '''NEW DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse X, Y Z as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> For '''LEGACY DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse A, B C as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> This is an example poll. To vote on what should be considered Legacy, see this [[:Category:Working Group | page]].<br /> <br /> &lt;poll&gt;<br /> For marine sedimentary archives, how old does a dataset have to be in order to qualify as 'legacy'?<br /> Pre-bomb<br /> Pre-historic<br /> Pre-internet<br /> Published prior to June 23 2016<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=13055 2016-11-21T19:14:27Z

<p>Jrichey: /* TEX86 */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types:<br /> <br /> == Geochemical Data ==<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> ==== Stable isotopes ====<br /> <br /> ==== Trace Metals ====<br /> <br /> ===== Mg/Ca =====<br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> ==Micropaleontological Data ==<br /> <br /> == Polls ==<br /> Here are three example polls that the group might want to consider:<br /> <br /> For '''NEW DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse X, Y Z as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> For '''LEGACY DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse A, B C as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> This is an example poll. To vote on what should be considered Legacy, see this [[:Category:Working Group | page]].<br /> <br /> &lt;poll&gt;<br /> For marine sedimentary archives, how old does a dataset have to be in order to qualify as 'legacy'?<br /> Pre-bomb<br /> Pre-historic<br /> Pre-internet<br /> Published prior to June 23 2016<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=13054 2016-11-21T19:13:55Z

<p>Jrichey: /* Alkenones */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types:<br /> <br /> == Geochemical Data ==<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> ==== Stable isotopes ====<br /> <br /> ==== Trace Metals ====<br /> <br /> ===== Mg/Ca =====<br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Physical Data ==<br /> <br /> ===Grain Size===<br /> <br /> == TEX86 ==<br /> <br /> <br /> <br /> == Polls ==<br /> Here are three example polls that the group might want to consider:<br /> <br /> For '''NEW DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse X, Y Z as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> For '''LEGACY DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse A, B C as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> This is an example poll. To vote on what should be considered Legacy, see this [[:Category:Working Group | page]].<br /> <br /> &lt;poll&gt;<br /> For marine sedimentary archives, how old does a dataset have to be in order to qualify as 'legacy'?<br /> Pre-bomb<br /> Pre-historic<br /> Pre-internet<br /> Published prior to June 23 2016<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Category:Marine_Sediment_Working_Group&diff=13053 2016-11-21T19:12:46Z

<p>Jrichey: /* Foraminifera */</p> <hr /> <div>[[Category:Working Group]]<br /> <br /> [[File:PS1920-1_0-750_sediment-core_hg.jpg|thumb|right|alt=A marine sediment core|Credit: Hannes Grobe (Own work) [http://creativecommons.org/licenses/by/3.0 CC BY 3.0], via [https://commons.wikimedia.org/wiki/File%3APS1920-1_0-750_sediment-core_hg.jpg Wikimedia Commons]]]<br /> <br /> == Overview ==<br /> In the Linked Earth context, a [[:Category:Working_Group|working group]] (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed [[:Category:Working_Group|herewith]]. This page is dedicated to the discussion of data and metadata standards for '''marine sedimentary archives''' (see [[:Category:MarineSediment | this page]] for a definition of Marine Sediment Archive), and aims to formulate a set of recommendations for such a standard.<br /> <br /> === Members ===<br /> <br /> The group currently has one coordinator, [[Julie_Richey|Julie Richey (USGS)]]<br /> <br /> __MEMBERS__<br /> <br /> == Specific tasks ==<br /> <br /> We recommend that discussions focus on the following considerations, and explore potential commonalities.<br /> <br /> For each observation type, we recommend:<br /> * structuring discussions around what scientific questions one would want to ask of the data<br /> * listing essential, recommended, and optional information for:<br /> ** the measurements themselves<br /> ** any inference made from the measurements (e.g. calibration to temperature)<br /> ** the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)<br /> * providing an '''ideal data table''', so the community knows what to report and how to report it.<br /> * providing separate recommendations for new and legacy datasets, and for how to label measured and inferred variable (e.g. Mg/Ca is measured, temperature is inferred)<br /> * thinking about how the rest of the paleoscience community, or other (non)scientists may make use of the data you describe. <br /> <br /> Marine sediments are a very ubiquitous archive on which many types of observations are made, and involving thousands of people around the world. It seems wise for this WG to rally around sub-groups start dedicated to data standards about the following sensors/observation types:<br /> <br /> == Geochemical Data ==<br /> <br /> ===Foraminiferal Geochemistry===<br /> <br /> ==== Stable isotopes ====<br /> <br /> ==== Trace Metals ====<br /> <br /> ===== Mg/Ca =====<br /> &lt;poll&gt;<br /> Should the cleaning methodology be considered:<br /> Essential Metadata<br /> Recommended Metadata<br /> Desired Metadata<br /> &lt;/poll&gt;<br /> <br /> ===Organic Geochemistry===<br /> <br /> ====Alkenones====<br /> <br /> ====GDGTs====<br /> <br /> ====Compound specific isotopes====<br /> <br /> == Alkenones ==<br /> <br /> == TEX86 ==<br /> <br /> <br /> <br /> == Polls ==<br /> Here are three example polls that the group might want to consider:<br /> <br /> For '''NEW DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse X, Y Z as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> For '''LEGACY DATASETS''':<br /> &lt;poll&gt;<br /> Do you endorse A, B C as the three (and only three) essential metadata fields for datasets derived from marine sediments?<br /> Yes<br /> No<br /> Maybe so<br /> &lt;/poll&gt;<br /> <br /> This is an example poll. To vote on what should be considered Legacy, see this [[:Category:Working Group | page]].<br /> <br /> &lt;poll&gt;<br /> For marine sedimentary archives, how old does a dataset have to be in order to qualify as 'legacy'?<br /> Pre-bomb<br /> Pre-historic<br /> Pre-internet<br /> Published prior to June 23 2016<br /> &lt;/poll&gt;</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=11362 2016-09-27T18:54:20Z

<p>Jrichey: Added PropertyValue: Subscribes To = Category:Chronologies_Working_Group</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Expertise=Paleoceanography|<br /> Expertise=Organic_geochemistry|<br /> Expertise=Foraminiferal_geochemistry|<br /> Expertise=Coral_paleoclimate|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Picture URL=Http://wiki.linked.earth/wiki/images/d/d8/Jrichey.jpg|<br /> Subscribes To=Category:Chronologies_Working_Group|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Subscribes To=Category:Lake_Sediments_Working_Group|<br /> Subscribes To=Category:MARPA_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=11361 2016-09-27T18:54:17Z

<p>Jrichey: Added PropertyValue: Subscribes To = Category:MARPA_Working_Group</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Expertise=Paleoceanography|<br /> Expertise=Organic_geochemistry|<br /> Expertise=Foraminiferal_geochemistry|<br /> Expertise=Coral_paleoclimate|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Picture URL=Http://wiki.linked.earth/wiki/images/d/d8/Jrichey.jpg|<br /> Subscribes To=Category:MARPA_Working_Group|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Subscribes To=Category:Lake_Sediments_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=11360 2016-09-27T18:54:12Z

<p>Jrichey: Added PropertyValue: Subscribes To = Category:Lake_Sediments_Working_Group</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Expertise=Paleoceanography|<br /> Expertise=Organic_geochemistry|<br /> Expertise=Foraminiferal_geochemistry|<br /> Expertise=Coral_paleoclimate|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Picture URL=Http://wiki.linked.earth/wiki/images/d/d8/Jrichey.jpg|<br /> Subscribes To=Category:Lake_Sediments_Working_Group|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=9061 2016-09-21T22:00:01Z

<p>Jrichey: Set PropertyValue: Picture URL = http://wiki.linked.earth/wiki/images/d/d8/Jrichey.jpg</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Expertise=Paleoceanography|<br /> Expertise=Organic_geochemistry|<br /> Expertise=Foraminiferal_geochemistry|<br /> Expertise=Coral_paleoclimate|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Picture URL=Http://wiki.linked.earth/wiki/images/d/d8/Jrichey.jpg|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=9060 2016-09-21T21:56:21Z

<p>Jrichey: Set PropertyValue: Picture URL = http://wiki.linked.earth/File:Jrichey.jpg</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Expertise=Paleoceanography|<br /> Expertise=Organic_geochemistry|<br /> Expertise=Foraminiferal_geochemistry|<br /> Expertise=Coral_paleoclimate|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Picture URL=Http://wiki.linked.earth/File:Jrichey.jpg|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=File:Jrichey.jpg&diff=9059 2016-09-21T21:54:31Z

<p>Jrichey: </p> <hr /> <div></div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8950 2016-09-20T19:23:41Z

<p>Jrichey: Added PropertyValue: Google Scholar ID = https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Expertise=Paleoceanography,_organic_geochemistry,_foraminiferal_geochemistry,_coral_paleoclimate|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8949 2016-09-20T19:23:02Z

<p>Jrichey: Added PropertyValue: Expertise = Paleoceanography, organic geochemistry, foraminiferal geochemistry, coral paleoclimate</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Expertise=Paleoceanography,_organic_geochemistry,_foraminiferal_geochemistry,_coral_paleoclimate|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8947 2016-09-20T19:22:28Z

<p>Jrichey: Added PropertyValue: University = University of South Florida, College of Marine Science</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> University=University of South Florida, College of Marine Science|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8946 2016-09-20T19:22:00Z

<p>Jrichey: Deleted PropertyValue: Google Scholar ID = https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8945 2016-09-20T19:21:55Z

<p>Jrichey: Added PropertyValue: Website = https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage|<br /> Website=https://www.usgs.gov/staff-profiles/julie-richey?qt-staff_profile_science_products=3#qt-staff_profile_science_products}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8944 2016-09-20T19:20:48Z

<p>Jrichey: Added PropertyValue: Google Scholar ID = https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Google Scholar ID=https://scholar.google.com/citations?hl=en&amp;user=595LDgUAAAAJ&amp;view_op=list_works|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8942 2016-09-20T19:01:20Z

<p>Jrichey: Added PropertyValue: Twitter ID = @littleicerage</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group|<br /> Twitter ID=@littleicerage}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8941 2016-09-20T19:00:59Z

<p>Jrichey: Added PropertyValue: Current Position = Research Geologist</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Current Position=Research_Geologist|<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8940 2016-09-20T19:00:50Z

<p>Jrichey: Added PropertyValue: Current Affiliation = USGS</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Current Affiliation=USGS|<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8939 2016-09-20T19:00:45Z

<p>Jrichey: Added PropertyValue: Highest Degree = Ph.D</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Highest Degree=Ph.D|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8938 2016-09-20T19:00:38Z

<p>Jrichey: Added PropertyValue: Name © = Julie Richey</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Name ©=Julie Richey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8937 2016-09-20T19:00:29Z

<p>Jrichey: Added PropertyValue: OrcidNumber © = 0000-0002-2319-7980</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> OrcidNumber ©=0000-0002-2319-7980|<br /> Subscribes To=Category:Marine_Sediment_Working_Group}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8936 2016-09-20T18:59:37Z

<p>Jrichey: Added PropertyValue: Email © = jrichey@usgs.gov</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Email ©=jrichey@usgs.gov|<br /> Has User ID=Jrichey|<br /> Subscribes To=Category:Marine_Sediment_Working_Group}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8935 2016-09-20T18:56:47Z

<p>Jrichey: Added PropertyValue: Subscribes To = Category:Marine_Sediment_Working_Group</p> <hr /> <div>[[Category:Person_©]]{{#set:<br /> Has User ID=Jrichey|<br /> Subscribes To=Category:Marine_Sediment_Working_Group}}</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8933 2016-09-20T18:56:26Z

<p>Jrichey: Setting categories as Person_©</p> <hr /> <div>[[Category:Person_©]]</div>

Jrichey https://wiki.linked.earth/wiki/index.php?title=Julie_Richey&diff=8934 2016-09-20T18:56:26Z

<p>Jrichey: Added PropertyValue: Has_User_ID = Jrichey</p> <hr /> <div>[[Category:Person_©]]{{#set:|<br /> Has User ID=Jrichey}}</div>

Jrichey