NERC Data Catalogue Service
Subglacial water flow paths beneath Whillans Ice Plain, West Antarctica
This dataset provides a geopackage of the predicted subglacial water flow pathways beneath Whillans Ice Plain, West Antarctica, the contributory Whillans Ice Stream and neighbouring Kamb and Mercer Ice Streams. Flow paths were estimated based on hydropotential gradients using static grids of ice-surface elevation from the REMA mosaic (Howat and others, 2019) and ice thickness from Bedmachine Antarctica version 3 (Morlighem and others, 2020; 2022) from which bed elevation is inferred.
Wilson Sauthoff (dataset creator) was funded by NASA award 80NSSC21K0912.
Bryony I. D. Freer (project lead) was supported by Natural Environment Research Council (NERC) Satellite Data in Environmental Science (SENSE) Centre for Doctoral Training (grant no. NE/T00939X/1).
Simple
- Alternate title
- Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01854
- Date (Publication)
- 2024-06-07
- Identifier
- http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01854
- Maintenance and update frequency
- unknown Unknown
- Keywords
-
- NDGO0001
- NERC OAI Harvesting
-
- NERC_DDC
- GCMD Parameter Valids
-
- EARTH SCIENCE > Cryosphere > Snow/Ice
- EARTH SCIENCE > Hydrosphere > Ground Water > Ground Water Discharge/Flow
- BAS Free-text keywords
-
- Antarctica
- Engelhardt Subglacial Lake
- Siple Coast
- Subglacial hydrology
- Whillans Ice Plain
- flow paths
- subglacial lakes
- Use limitation
- This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Access constraints
- otherRestrictions Other restrictions
- Other constraints
- This data is covered by a UK Open Government Licence (http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Metadata language
- EnglishEnglish
- Topic category
-
- Geoscientific information
))
- Begin date
- 1961-01-01
- End date
- 2021-12-31
- Reference system identifier
- OGP / urn:ogc:def:crs:EPSG::4326
- Distribution format
-
- OnLine resource
- GET DATA ( http )
- Hierarchy level
- dataset Dataset
Domain consistency
- Measure identification
- INSPIRE / Conformity_001
Conformance result
- Date
- Explanation
- See the referenced specification
- Pass
- No
- Statement
- Ice-surface elevations from REMA (Howat and others, 2019) have relatively low error, typically less than 1 m. Sources of error in BedMachine Antarctica''s estimates of ice thickness and thus bed elevation include error in ice velocity direction and magnitude, error in surface mass balance, and ice thinning rates. Below grounded ice, the error in mass conservation derived ice thickness and bed elevation ranges from 36 m to exceeding 200 m based on the density radar sounding coverage (Morlighem and others, 2020; 2022). Within the region of subglacial flow path mapping, BedMachine Antarctica has a mean error of 74.8 m and a maximum error of 786.0 m, which is most prominent in the upper catchment of Kamb Ice Stream.
- File identifier
- GB_NERC_BAS_PDC_01854 XML
- Metadata language
- EnglishEnglish
- Hierarchy level
- dataset Dataset
- Date stamp
- 2024-06-07
- Metadata standard name
- NERC profile of ISO19115:2003
- Metadata standard version
- 1.0
Overviews
Spatial extent
Provided by
