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BEDMAP1 - Ice thickness, bed and surface elevation for Antarctica - gridding products
GB/NERC/BAS/PDC/01717

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Summary

Abstract:
We present here BEDMAP1 (2000-2001), a suite of gridded products describing surface elevation, ice-thickness and the sea floor and subglacial bed elevation of the Antarctic south of 60deg S. The suite includes grids representing:

- ice-sheet thickness over the ice sheet and 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 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.

Keywords:
Antarctica, BEDMAP, Elevation, ice thickness

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Citation

Lythe, M., Vaughan, D., & BEDMAP 1 Consortia. (2023). BEDMAP1 - Ice thickness, bed and surface elevation for Antarctica - gridding products (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/908BB17F-467C-42BF-AE00-F03BB0FEEA23

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REFERENCE MATERIALS

RELATED DATA SET METADATA

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Constraints

Access Constraints:  None
Use Constraints: This data is covered by a Creative Commons License (https://creativecommons.org/licenses/by/4.0/) Further by downloading this data the user acknowledges that they agree with the NERC data policy (http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions:

1. To cite the data and the Bedmap1 publication in any publication as follows:

REFERENCE:
Lythe, M. B. and Vaughan, D. G.: BEDMAP: A new ice thickness and subglacial topographic model of Antarctica, Journal of Geophysical Research: Solid Earth, 106, 11335-11351, https://doi.org/10.1029/2000JB900449, 2001.


DATA:
Lythe, M., Vaughan, D., BEDMAP 1, consortia (2023). BEDMAP1 - Ice thickness, bed and surface elevation for Antarctica - gridding products (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre.

2. The user recognizes the limitations of data. Use of the data is at the users' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data.

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Basic Information

Creation Date: 2023-02-28
Dataset Progress: Complete
Dataset Language: English
ISO Topic Categories:  
  • Elevation
  • Environment
  • Geoscientific Information
Parameters:
  • Cryosphere > Glaciers/Ice Sheets
  • Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
  • Cryosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness
  • Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
Personnel:
Name PDC BAS
Role(s) Metadata Author
Organisation British Antarctic Survey
   
Name Mr Matt B Lythe
Role(s) Investigator
Organisation British Antarctic Survey
   
Name Prof David G Vaughan
Role(s) Investigator
Organisation British Antarctic Survey
   
Name BEDMAP 1 consortia
Role(s) Investigator
   
Parent Dataset: N/A

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Additional Information

Reference: REFERENCE MATERIALS

Fretwell, P., Pritchard, H. D., Vaughan, D. G., Bamber, J. L., Barrand, N. E., Bell, R., Bianchi, C., Bingham, R. G., Blankenship, D. D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A. J., Corr, H. F. J., Damaske, D., Damm, V., Ferraccioli, F., Forsberg, R., Fujita, S., Gim, Y., Gogineni, P., Griggs, J. A., Hindmarsh, R. C. A., Holmlund, P., Holt, J. W., Jacobel, R. W., Jenkins, A., Jokat, W., Jordan, T., King, E. C., Kohler, J., Krabill, W., Riger-Kusk, M., Langley, K. A., Leitchenkov, G., Leuschen, C., Luyendyk, B. P., Matsuoka, K., Mouginot, J., Nitsche, F. O., Nogi, Y., Nost, O. A., Popov, S. V., Rignot, E., Rippin, D. M., Rivera, A., Roberts, J., Ross, N., Siegert, M. J., Smith, A. M., Steinhage, D., Studinger, M., Sun, B., Tinto, B. K., Welch, B. C., Wilson, D., Young, D. A., Xiangbin, C., and Zirizzotti, A.: Bedmap2: improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7, 375-393, https://doi.org/10.5194/tc-7-375-2013, 2013.

Lythe, M. B. and Vaughan, D. G.: BEDMAP-bed topography of the Antarctic, British Antarctic Survey, Natural Environment Research Council, 2000.

Lythe, M. B. and Vaughan, D. G.: BEDMAP: A new ice thickness and subglacial topographic model of Antarctica, Journal of Geophysical Research: Solid Earth, 106, 11335-11351, https://doi.org/10.1029/2000JB900449, 2001.

DATA:

BEDMAP1

Lythe, M., Vaughan, D., BEDMAP 1, consortia, Fremand, A., & Bodart, J. (2022). BEDMAP1 - Ice thickness, bed and surface elevation for Antarctica - standardised data points (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/F64815EC-4077-4432-9F55-0CE230F46029

Lythe, M., Vaughan, D., BEDMAP 1, consortia, Fremand, A., & Bodart, J. (2022). BEDMAP1 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/925AC4EC-2A9D-461A-BFAA-6314EB0888C8

BEDMAP2

Fretwell, P., Fremand, A., Bodart, J., Pritchard, H., Vaughan, D., Bamber, J., Barrand, N., Bell, R. E., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A., Corr, H., Damaske, D., Damn, V., ... Zirizzotti, A. (2022). BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised data points (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/2FD95199-365E-4DA1-AE26-3B6D48B3E6AC

Fretwell, P., Pritchard, H., Vaughan, D., Bamber, J., Barrand, N., Bell, R. E., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A., Corr, H., Damaske, D., Damn, V., Ferraccioli, F., Forsberg, R., ... Bodart, J. (2022). BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/0F90D926-99CE-43C9-B536-0C7791D1728B

Fretwell, P., Pritchard, H., Vaughan, D., Bamber, J., Barrand, N., Bell, R. E., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Callens, D., Conway, H., Cook, A., Corr, H., Damaske, D., Damn, V., Ferraccioli, F., Forsberg, R., ... Zirizzotti, A. (2022). BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - gridding products (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/FA5D606C-DC95-47EE-9016-7A82E446F2F2

BEDMAP3

Fremand, A., Fretwell, P., Bodart, J., Pritchard, H., Aitken, A., Bamber, J., Bell, R. E., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Christianson, K., Conway, H., Corr, H., Cui, X., Damaske, D., Damn, V., Drews, R., .... Zirizzotti, A. (2022). BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - standardised data points (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/91523FF9-D621-46B3-87F7-FFB6EFCD1847

Fretwell, P., Pritchard, H., Fremand, A., Bodart, J., Aitken, A., Bamber, J., Bell, R. E., Bianchi, C., Bingham, R., Blankenship, D., Casassa, G., Catania, G., Christianson, K., Conway, H., Corr, H., Cui, X., Damaske, D., Damn, V., Drews, R., ... Zirizzotti, A. (2022). BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/A72A50C6-A829-4E12-9F9A-5A683A1ACC4A

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Locality

Temporal Coverage:
Start Date 1966-01-01
End Date 2000-12-31
   
Spatial Coverage:
Latitude  
Southernmost -90
Northernmost -60
Longitude  
Westernmost -180
Easternmost 180
Altitude  
Min Altitude N/A
Max Altitude N/A
Depth  
Min Depth N/A
Max Depth N/A
   
Data Resolution:
Latitude Resolution N/A
Longitude Resolution   N/A
Horizontal Resolution Range 1 km - < 10 km or approximately .01 degree - < .09 degree
Vertical Resolution N/A
Vertical Resolution Range N/A
Temporal Resolution N/A
Temporal Resolution Range N/A
   
Location:
Location Antarctica
Detailed Location   N/A

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Instrumentation

Sensor(s):
  • RADAR ECHO SOUNDERS
Source(s):
  • AIRCRAFT
Data Collection: The primary source data consist of survey point measurements of ice thickness, bed elevation and surface elevation, which principally comes from airborne radar surveys and seismic soundings, and to a smaller extent from ground-based radar surveys.

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Storage

Distribution:
Distribution Media Online Internet (HTTP)
Distribution Size N/A
Distribution Format  SHP
Fees N/A
   

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