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BEDMAP ice-thickness database

The BEDMAP (Bed Topography of the Antarctic) database contains data collected on surveys over the past 50 years that describe the thickness of the Antarctic ice sheet. This has allowed the compilation of a suite of seamless digital topographic models for the Antarctic continent and surrounding ocean. The suite includes grids representing:

- ice-sheet ... thickness over the ice sheet and shelves,

- water-column thickness beneath the floating ice shelves,

- bed elevation beneath the grounded ice sheet,

- bathymetry to 60 degrees South including the areas beneath the ice shelves.

These grids are consistent with a recent high-resolution surface elevation model of Antarctica. While the digital models have a nominal spatial resolution of 5 km, such high resolution is not strictly justified by the original data density over all parts of the ice sheet. The suite does however provide an unparalleled vision of the geosphere beneath the ice sheet and a more reliable basis for ice sheet modelling. The bed elevation DEM, which includes the entire geosphere south of 60 degrees South, provides an improved delineation of the boundary between East and West Antarctica and sheds new light on the morphology of the contiguous East Antarctic landmass, much of which is buried below an average of 2500 m of ice.

Simple

Alternate title
Polar Data Centre (PDC) record GB/NERC/BAS/PDC/00252
Date (Publication)
2022-03-22
Identifier
http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/00252
Custodian
  British Antarctic Survey
High Cross, Madingley Road , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Originator
  British Antarctic Survey - Lythe, M.B., Vaughan, D.G. and the BEDMAP Consortium
High Cross, Madingley , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Maintenance and update frequency
unknown Unknown
Keywords
  • NDGO0001
NERC OAI Harvesting
  • NERC_DDC
GCMD Parameter Valids
  • EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
  • EARTH SCIENCE > Cryosphere > Snow/Ice > Ice Depth/Thickness
  • EARTH SCIENCE > Land Surface > Topography
INSPIRE themes
  • Elevation
  • Land cover
BAS Free-text keywords
  • BEDMAP
  • Bathymetry
  • Bed Elevation
  • Ice Thickness
  • Water Column Thickness
Use limitation

The following protocols were generally agreed by the participants of the BEDMAP consortium as providing adequate safeguards for data-collectors, whilst allowing other BEDMAP partners and, eventually, the wider community the opportunity to use BEDMAP data for research purposes. The guidelines adopted would be broadly similar to those adopted by the ADMAP consortium for magnetic anomaly data (ADMAP, 1995) -

1. At least until the next BEDMAP workshop any data deposited with the BEDMAP data managers would be considered to be for the sole use of BEDMAP and would not be released to any third party for other purposes.

2. All gridded datasets and contour maps produced by BEDMAP will be freely available to all bone fide researchers

3. Certain restrictions will apply for access to the individual measurements of ice thickness deposited with BEDMAP. For 3 years after collection data are considered to be the sole property of the originators. For the subsequent 3 years the data will be made available for use by other BEDMAP researchers, provided that this transfer is considered as a collaboration between the originator and recipient, and authorship of resulting publications should acknowledge that collaboration.

4. For existing datasets the same restrictions will apply but with the date of publication of this report being considered as the beginning of the process.

5. A companion paper will be prepared as an accompaniment to the final bed elevation map. This will be published with an authorship reflecting the entire BEDMAP consortium.

6. The copyright of the final product of BEDMAP will be vested with SCAR.

Access constraints
otherRestrictions Other restrictions
Other constraints

The following protocols were generally agreed by the participants of the BEDMAP consortium as providing adequate safeguards for data-collectors, whilst allowing other BEDMAP partners and, eventually, the wider community the opportunity to use BEDMAP data for research purposes. The guidelines adopted would be broadly similar to those adopted by the ADMAP consortium for magnetic anomaly data (ADMAP, 1995) -

1. At least until the next BEDMAP workshop any data deposited with the BEDMAP data managers would be considered to be for the sole use of BEDMAP and would not be released to any third party for other purposes.

2. All gridded datasets and contour maps produced by BEDMAP will be freely available to all bone fide researchers

3. Certain restrictions will apply for access to the individual measurements of ice thickness deposited with BEDMAP. For 3 years after collection data are considered to be the sole property of the originators. For the subsequent 3 years the data will be made available for use by other BEDMAP researchers, provided that this transfer is considered as a collaboration between the originator and recipient, and authorship of resulting publications should acknowledge that collaboration.

4. For existing datasets the same restrictions will apply but with the date of publication of this report being considered as the beginning of the process.

5. A companion paper will be prepared as an accompaniment to the final bed elevation map. This will be published with an authorship reflecting the entire BEDMAP consortium.

6. The copyright of the final product of BEDMAP will be vested with SCAR.

Metadata language
EnglishEnglish
Topic category
  • Elevation
  • Geoscientific information
  • Inland waters
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Begin date
1951-01-01
End date
unknown
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
Distributor
  Polar Data Centre - British Antarctic Survey
+44 (0)1223 221400
Protocol
http
Name
GET DATA
Function
download Download
Protocol
http
Name
GET DATA
Function
download Download
Hierarchy level
dataset Dataset

Domain consistency

Measure identification
INSPIRE / Conformity_001

Conformance result

Date
Explanation
See the referenced specification
Pass
No
Statement
While the digital models have a nominal spatial resolution of 5 km, such high resolution is not strictly justified by the original data density over all parts of the ice sheet.
File identifier
GB_NERC_BAS_PDC_00252 XML
Metadata language
EnglishEnglish
Hierarchy level
dataset Dataset
Date stamp
2022-03-22
Metadata standard name
NERC profile of ISO19115:2003
Metadata standard version
1.0
Point of contact
  British Antarctic Survey
+44 (0)1223 221400
Dataset URI
http://www.antarctica.ac.uk/dms/metadata.php?id=GB/NERC/BAS/PDC/00252
 
 

Overviews

Spatial extent

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Keywords


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