https://wiki.linked.earth/wiki/api.php?action=feedcontributions&user=Lcomasbru&feedformat=atom
Linked Earth Wiki - User contributions [en]
2024-03-29T12:29:29Z
User contributions
MediaWiki 1.26.3
https://wiki.linked.earth/wiki/index.php?title=Category:Speleothem_Working_Group&diff=16764
Category:Speleothem Working Group
2017-04-18T16:18:22Z
<p>Lcomasbru: /* Things to describe */</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 [[:Category:Speleothem | speleothems]], and aims to formulate a set of recommendations for such a standard. <br />
<br />
== Membership ==<br />
__MEMBERS__<br />
<br />
== Specific tasks ==<br />
<br />
We recommend that discussions focus on the following techniques, 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 />
* provide an '''ideal data table''' (or [[Cyrstal2013.paleo1measurement1 | link to one]]) 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 />
== Things to describe ==<br />
<br />
=== Site (cave) ===<br />
<br />
* Site name<br />
* Coordinates<br />
* Elevation<br />
* Geology<br />
* Rock Age<br />
* Have measurements been made of the cave environment over a season or several years (not one off)? Yes/No<br />
<br />
=== Entity (speleothem) ===<br />
<br />
* Entity name<br />
* Distance from cave entrance (in m)<br />
* Thickness of overlying bedrock above the speleothem (in m)<br />
* Speleothem type (candlestick stalagmite, stalagmite boss, flowstone)<br />
* Drip type (seepage, seasonal, mixture, unknown)<br />
* Type of measurements available for that entity (stable isotopes, trace metals, organics, fluid inclusions, mineralogy, clumped isotopes, noble gas temperatures, C14, Optical Density of luminosity (ODL), Mg/Ca)<br />
* DOI/link for raw data (e.g NOAA, PANGAEA)<br />
<br />
=== References (for each speleothem) ===<br />
<br />
* Citation<br />
* DOI <br />
<br />
=== Chronology ===<br />
<br />
Please see the [[:Category:Chronologies_Working_Group| chronologies WG]] for generalities about U/Th dating or layer-counting.<br />
If challenges specific to dating speleothems exist, please list relevant metadata properties below.<br />
<br />
* Date type (MC-ICP-MS, Alpha U/Th, U/Th TIMS, Annual laminations, cross-dating, c14)<br />
* Depth of the sample (in mm)<br />
* Thickness of the sample (in mm)<br />
* lab number<br />
* sample material dated (aragonite powder, calcite)<br />
* min/max weight of sample used for dating<br />
* Is date used in the original age model? Yes/No<br />
* For U/Th samples: uncorrected age, 238U content, 232Th content, 230Th content, 230Th/232Th ratio, 230th/238U activity, decay constants used, corrected age, year of chemistry<br />
<br />
=== Age models ===<br />
<br />
* Age model type (linear between dates, polynomial fit, polynomial fit omitting outliers, bayesian, stalAge...)<br />
* For age models based in lamina counting, evidence that laminae are annual<br />
* For age models using C14 for deposition rate, evidence on robustness of assumed linearity<br />
<br />
=== Sample data ===<br />
<br />
* Distance from top of speleothem<br />
* Thickness of analysed sample<br />
* Evidence of equilibrium (Hendy tests)<br />
* Year (with uncertainty)<br />
* Measurements with precision<br />
* Isotope standards (PDB, VPDB)<br />
* Correction made for aragonite?<br />
<br />
=== Modern Cave Conditions ===<br />
<br />
The interpretation of geochemical or lithological signals embedded in speleothem archives relies sometimes heavily on implicit assumptions about cave hydrology.<br />
What parameters need to be archived to enable long-term re-use and better information extraction from speleothem datasets?<br />
<br />
Above-Cave<br />
* soil thickness<br />
* vegetation type<br />
<br />
In-Karst Hydrology<br />
* karst residence time<br />
* transit time distributions<br />
* porosity<br />
* rock overburden thickness<br />
* flow route type<br />
<br />
In-Cave<br />
* Temperature<br />
* Humidity<br />
* pCO2<br />
* drip-rate<br />
* drip chemistry<br />
<br />
==References==<br />
<references \></div>
Lcomasbru
https://wiki.linked.earth/wiki/index.php?title=Category:Speleothem_Working_Group&diff=15975
Category:Speleothem Working Group
2017-03-31T18:10:50Z
<p>Lcomasbru: /* Things to describe */</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 [[:Category:Speleothem | speleothems]], and aims to formulate a set of recommendations for such a standard. <br />
<br />
== Membership ==<br />
__MEMBERS__<br />
<br />
== Specific tasks ==<br />
<br />
We recommend that discussions focus on the following techniques, 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 />
* provide an '''ideal data table''' (or [[Cyrstal2013.paleo1measurement1 | link to one]]) 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 />
== Things to describe ==<br />
=== Observations ===<br />
<br />
* stable isotopes<br />
* trace metals<br />
* organics<br />
* fluid inclusions<br />
* mineralogy<br />
* clumped isotopes<br />
* noble gas temperatures<br />
* C14<br />
* Optical Density of luminosity (ODL)<br />
* Mg/Ca<br />
<br />
=== Hydrology ===<br />
<br />
The interpretation of geochemical or lithological signals embedded in speleothem archives relies sometimes heavily on implicit assumptions about cave hydrology.<br />
What parameters need to be archived to enable long-term re-use and better information extraction from speleothem datasets?<br />
A few come to mind:<br />
<br />
* karst residence time<br />
* transit time distributions<br />
* porosity<br />
* soil thickness<br />
<br />
=== Chronology ===<br />
Please see the [[:CategoryChronologies_Working_Group| chronologies WG]] for generalities about U/Th dating or layer-counting.<br />
If challenges specific to dating speleothems exist, please list relevant metadata properties below.<br />
<br />
* For age models based in lamina counting, evidence that laminae are annual<br />
* For age models using C14 for deposition rate, evidence on robustness of assumed linearity<br />
<br />
=== Sample data ===<br />
<br />
* Distance from top of speleothem<br />
* Thickness of analysed sample<br />
* Evidence of equilibrium (Hendy tests)<br />
* Year (with uncertainty)<br />
<br />
==References==<br />
<references \></div>
Lcomasbru
https://wiki.linked.earth/wiki/index.php?title=Category:Speleothem_Working_Group&diff=15974
Category:Speleothem Working Group
2017-03-31T18:04:42Z
<p>Lcomasbru: /* Observations */</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 [[:Category:Speleothem | speleothems]], and aims to formulate a set of recommendations for such a standard. <br />
<br />
== Membership ==<br />
__MEMBERS__<br />
<br />
== Specific tasks ==<br />
<br />
We recommend that discussions focus on the following techniques, 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 />
* provide an '''ideal data table''' (or [[Cyrstal2013.paleo1measurement1 | link to one]]) 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 />
== Things to describe ==<br />
=== Observations ===<br />
<br />
* stable isotopes<br />
* trace metals<br />
* organics<br />
* fluid inclusions<br />
* mineralogy<br />
* clumped isotopes<br />
* noble gas temperatures<br />
* C14<br />
* Optical Density of luminosity (ODL)<br />
* Mg/Ca<br />
<br />
=== Hydrology ===<br />
<br />
The interpretation of geochemical or lithological signals embedded in speleothem archives relies sometimes heavily on implicit assumptions about cave hydrology.<br />
What parameters need to be archived to enable long-term re-use and better information extraction from speleothem datasets?<br />
A few come to mind:<br />
<br />
* karst residence time<br />
* transit time distributions<br />
* porosity<br />
* soil thickness<br />
<br />
=== Chronology ===<br />
Please see the [[:CategoryChronologies_Working_Group| chronologies WG]] for generalities about U/Th dating or layer-counting.<br />
If challenges specific to dating speleothems exist, please list relevant metadata properties below.<br />
<br />
<br />
==References==<br />
<references \></div>
Lcomasbru
https://wiki.linked.earth/wiki/index.php?title=Category:Speleothem_Working_Group&diff=15973
Category:Speleothem Working Group
2017-03-31T18:03:20Z
<p>Lcomasbru: correct a typo</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 [[:Category:Speleothem | speleothems]], and aims to formulate a set of recommendations for such a standard. <br />
<br />
== Membership ==<br />
__MEMBERS__<br />
<br />
== Specific tasks ==<br />
<br />
We recommend that discussions focus on the following techniques, 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 />
* provide an '''ideal data table''' (or [[Cyrstal2013.paleo1measurement1 | link to one]]) 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 />
== Things to describe ==<br />
=== Observations ===<br />
<br />
* stable isotopes<br />
* trace metals<br />
<br />
=== Hydrology ===<br />
<br />
The interpretation of geochemical or lithological signals embedded in speleothem archives relies sometimes heavily on implicit assumptions about cave hydrology.<br />
What parameters need to be archived to enable long-term re-use and better information extraction from speleothem datasets?<br />
A few come to mind:<br />
<br />
* karst residence time<br />
* transit time distributions<br />
* porosity<br />
* soil thickness<br />
<br />
=== Chronology ===<br />
Please see the [[:CategoryChronologies_Working_Group| chronologies WG]] for generalities about U/Th dating or layer-counting.<br />
If challenges specific to dating speleothems exist, please list relevant metadata properties below.<br />
<br />
<br />
==References==<br />
<references \></div>
Lcomasbru
https://wiki.linked.earth/wiki/index.php?title=Laia_Comas_Bru&diff=13004
Laia Comas Bru
2016-11-14T16:15:18Z
<p>Lcomasbru: Added PropertyValue: Subscribes To = Category:Speleothem_Working_Group</p>
<hr />
<div>[[Category:Person_©]]{{#set:<br />
Has User ID=Lcomasbru|<br />
Subscribes To=Category:Speleothem_Working_Group}}</div>
Lcomasbru
https://wiki.linked.earth/wiki/index.php?title=Laia_Comas_Bru&diff=13003
Laia Comas Bru
2016-11-14T16:15:07Z
<p>Lcomasbru: Added PropertyValue: Has_User_ID = Lcomasbru</p>
<hr />
<div>[[Category:Person_©]]{{#set:|<br />
Has User ID=Lcomasbru}}</div>
Lcomasbru
https://wiki.linked.earth/wiki/index.php?title=Laia_Comas_Bru&diff=13002
Laia Comas Bru
2016-11-14T16:15:06Z
<p>Lcomasbru: Setting categories as Person_©</p>
<hr />
<div>[[Category:Person_©]]</div>
Lcomasbru