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Description

This data set, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, contains a bed topography and bathymetry map of Antarctica. Bed topography is deduced by subtracting ice thickness from the surface elevation; using Ice Flow Perturbation Analysis (IFPA); and by other methods. Surface elevations are obtained from the Reference Elevation Model of Antarctica (REMA) and high-resolution satellite maps.

Version Description

Changes for this version include: - Uses ice flow perturbation analysis to map the bed in the interior - Uses ice thickness estimates from IceBoost, for periphery glaciers and Peninsula - Use ocean bathymetry from AntGG along parts of the coast and IBCSO v2 - Includes a new field 'RGI' that indicates pixels which belong to glaciers in the Randolph Glacier Inventory

Product Summary

Platforms
MODELS
Instruments
NOT APPLICABLE
Spatial Extent

N: -53 S: -90 E: 180 W: -180

Spatial Resolution
500 Meters x 500 Meters
Spatial Reference System(s)
WGS 84 / Antarctic Polar Stereographic (EPSG:3031)
Location
ANTARCTICA
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1970-01-01 to 2019-10-01
Concept ID
C3973022985-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
1
Processing Level
4
Published
Science Keywords
Bathymetry ,
Bed Elevation ,
Firn Air Content ,
Glacier/Ice Sheet Thickness ,
Terrain Elevation

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Morlighem, M. (2025). MEaSUREs BedMachine Antarctica, Version 4 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/POJQI54A45HX Date Accessed: 2026-08-07

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
A model of water extraction from the subglacial hydrologic system under idealized conditions Meyer, Colin R., Warburton, Katarzyna L. P., Sommers, Aleah N., Minchew, Brent M. Ice Velocity, Bathymetry, Bed Elevation, Firn Air Content, Glacier/Ice Sheet Thickness, Terrain Elevation
Using Antarctic subglacial relic landscapes to inform past ice sheet retreat in the warm Pliocene Knight, Rebecca, Gasson, Edward, Littler, Kate, Noble, Taryn, Halberstadt, Anna Ruth Bathymetry, Bed Elevation, Firn Air Content, Glacier/Ice Sheet Thickness, Terrain Elevation
The Foundation-Patuxent-Academy ice stream system, Antarctica Ross, Neil, Sanderson, Rebecca J., Kulessa, Bernd, Siegert, Martin, Paxman, Guy J. G., Nichols, Keir A., Siegfried, Matthew R., Jamieson, Stewart S. R., Bentley, Michael J., Jordan, Tom A., Batchelor, Christine L., Small, David, Eisen, Olaf, Winter, Kate, Bingham, Robert G., Callard, S. Louise, Carr, Rachel, Dow, Christine F., Fricker, Helen A., Hill, Emily, Hills, Benjamin H., Hofstede, Coen, Jeofry, Hafeez, Napoleoni, Felipe, Sauthoff, Wilson Basins, Coastline, Grounding Line, Ice Shelves, Bathymetry, Bed Elevation, Firn Air Content, Glacier/Ice Sheet Thickness, Terrain Elevation, Ice Velocity
Inferring subglacial topography using physics informed machine learning constrained by two conservation laws Krishna, Mansa, Cheng, Gong, Morlighem, Mathieu Bathymetry, Bed Elevation, Glacier/Ice Sheet Thickness, Terrain Elevation, Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Firn Air Content
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