BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation
By M. Morlighem, C. Williams, Eric J. M. Rignot, L. An, J. Arndt, Jonathan L. Bamber, G. Catania, N. Chauché, J. Dowdeswell, B. Dorschel and 22 more. Geophysical Research Letters, 2017
807 citations recorded by the source corpus.
Greenland's bed topography is a primary control on ice flow, grounding line migration, calving dynamics, and subglacial drainage. Moreover, fjord bathymetry regulates the penetration of warm Atlantic water (AW) that rapidly melts and undercuts Greenland's marine‐terminating glaciers. Here we present a new compilation of Greenland bed topography that assimilates seafloor bathymetry and ice thickness data through a mass conservation approach. A new 150 m horizontal resolution bed topography/bathymetric map of Greenland is constructed with seamless transitions at the ice/ocean interface, yielding major improvements over previous data sets, particularly in the marine‐terminating sectors of northwest and southeast Greenland. Our map reveals that the total sea level potential of the Greenland ice sheet is 7.42 ± 0.05 m, which is 7 cm greater than previous estimates. Furthermore, it explains recent calving front response of numerous outlet glaciers and reveals new pathways by which AW can access glaciers with marine‐based basins, thereby highlighting sectors of Greenland that are most vulnerable to future oceanic forcing.
Subfields: Atmospheric Science, Environmental Chemistry
View Paper: https://www.semanticscholar.org/paper/9f12307d0f8e6522d44a7bc07aa5421a3d710e82
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In Atmospheric Science
- Eric J. M. Rignot
- Jeremie Mouginot
- Isabella Velicogna
- Bernd Scheuchl
- F. Landerer
- David Wiese
- Tyler Clark Sutterley
- Mathieu Morlighem
In Environmental Chemistry
Citations in the corpus
- Continuity of Ice Sheet Mass Loss in Greenland and Antarctica From the GRACE and GRACE Follow‐On Missions (2020, background): “Ice thickness is from BedMachine Antarctica (Morlighem et al., 2019) and BedMachine Greenland (Morlighem et al., 2017).”
- Continent‐Wide, Interferometric SAR Phase, Mapping of Antarctic Ice Velocity (2019, background): “Another important application of the phase map will be to extend the domain of ice thickness mapping using mass conservation (Morlighem et al., 2011, 2014, 2017), thereby extending it from narrow but important sectors of fast moving ice around the periphery to much larger areas in the interior…”
- Forty-six years of Greenland Ice Sheet mass balance from 1972 to 2018 (2019, methodology): “Morlighem M, et al. (2017) BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multibeam echo sounding combined with mass conservation.”