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Description
This data set contains a bed topography and bathymetry map of Greenland based on mass conservation, multi-beam data, and other techniques. It also includes surface elevation and ice thickness data, as well as an ice/ocean/land mask.
Version Description
Generated ensemble of bed topography maps using ICESat-2 time series and used the median depth instead of a single estimate for some glaciers; Used ice thickness estimates from IceBoost for periphery glaciers; Added a new field 'RGI' that indicates which pixel belongs to a glacier in the Randolph Glacier Inventory; Added bathymetry data from the Danish Hydrographic Office
-Updated bathymetry of Petermann based on Ciraci et al. (2023) gravity inversion
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.
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Morlighem, M., & et al. (2025). IceBridge BedMachine Greenland, Version 6 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/6B6B225B8V2D Date Accessed: 2026-09-20
@misc{morlighem_et al_2025,
title={IceBridge BedMachine Greenland, Version 6},
url={http://nsidc.org/data/IDBMG4/versions/6},
DOI={10.5067/6B6B225B8V2D},
publisher={NASA National Snow and Ice Data Center Distributed Active Archive Center},
author={Morlighem, Mathieu and et al},
year={2025},
}
Morlighem, M., & et al. (2025). IceBridge BedMachine Greenland, Version 6 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/6B6B225B8V2D Date Accessed: 2026-09-20
Morlighem, Mathieu, and et al. “IceBridge BedMachine Greenland, Version 6.” NASA National Snow and Ice Data Center Distributed Active Archive Center, 2025, https://doi.org/10.5067/6B6B225B8V2D. Date Accessed: 2026-09-20
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Law, Robert, Born, Andreas, Voigt, Philipp, MacGregor, Joseph A., Guimond, Claire Marie
Bathymetry, Bed Elevation, Glacier/Ice Sheet Thickness, Terrain Elevation, Age At Ice-thickness-normalized Depths, Age Of Internal Reflections, Depths At Specific Ages, Geometry Of Internal Reflections
Fahrner, Dominik, Slater, Donald A., KC, Aman, Cenedese, Claudia, Sutherland, David A., Enderlin, Ellyn, de Jong, M. Femke, Kjeldsen, Kristian K., Wood, Michael, Nienow, Peter, Nowicki, Sophie, Wagner, Till J. W.
Ice Velocity, Bathymetry, Bed Elevation, Glacier/Ice Sheet Thickness, Terrain Elevation