Known Issues With LinkedEarth Representation of the PAGES2k Dataset

From Linked Earth Wiki
Revision as of 18:49, 26 July 2017 by Khider (Talk | contribs) (Calibration issue)

Jump to: navigation, search

This page lists the issue identified with the representation of the PAGES2k dataset in LinkedEarth.

Ghost measured variables

Because the LinkedEarth Ontology requires the representation of the archive type to be made on a measured variable, it was decided to create "ghost" measured variable if only the inferred variables were archived. The following datastes have improperly set the inferred variable to a measured variable with a Property:ProxyObservationType (L) set to "Ghostmeasured".

Instead, these datasets should have an additional entry in the JSON-LD file with the proper Property:ProxyObservationType (L).

 
Afr-P178-15P.Tierney.2015.paleo3measurement1
Ant-DSS.DahlJensen.1999.paleo1measurement1
Ant-WAIS-Divide.Severinghaus.2012.paleo1measurement1
Arc-BigRoundLake.Thomas.2009.paleo1measurement1
Arc-GulfofAlaska.Wilson.2014.paleo1measurement1
Arc-HudsonLake.Clegg.2011.paleo1measurement1
Arc-Iceland.Bergthorsson.1969.paleo1measurement1
Arc-LakeE.DAndrea.2011.paleo1measurement1
Arc-MD992275.Jiang.2005.paleo1measurement1
Arc-StoreggaSlide.Sejrup.2011.paleo1measurement1
... further results

Earliest Sample Date/Latest Sample Date

The period covered by the record should be provided at the variable level through the HasMinValue and HasMaxValue properties.

Pages showing EarliestSampleDate can be found here while pages showing LatestSampleDate can be found here.

Calibration models on measured Variable

The newest version of the LinkedEarth Ontology should only allow the calibration model to be attached to an inferred variable through the property calibratedVia. Some PAGES2k datasets have information relating to calibration on the measured variable.

 
Africa 001.d18O
Arc 001.thickness
Aus 015.trsgi
Aus 020.trsgi
PYT0KEXC0XJ.ghostMeasured
PYT10B6Y9V4.ghostMeasured
PYT1J4LM3YU.ghostMeasured
PYT22RKLEGF.ghostMeasured
PYT2J0FBLWB.ghostMeasured
PYT2SGXNF4F.ghostMeasured
... further results