BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation
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...
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Online Access: | http://hdl.handle.net/10044/1/51033 https://doi.org/10.1002/2017GL074954 |
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ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/51033 2023-05-15T16:23:40+02:00 BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation Morlighem, M Williams, C Rignot, E An, L Bamber, J Chauche, N Dowdeswell, J Dorschel, B Holland, DM Holland, D Howat, I Hubbard, A Jordan, T Millan, R Mouginot, J Noel, B O’Cofaigh, C Seroussi, H Siegert, M Slabon, P Van den Broeke, M Weinrebe, W Natural Environment Research Council (NERC) Natural Environment Research Council (NERC) 2017-09-16 http://hdl.handle.net/10044/1/51033 https://doi.org/10.1002/2017GL074954 unknown American Geophysical Union Geophysical Research Letters ©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY 11,061 11,051 MD Multidisciplinary Meteorology & Atmospheric Sciences Journal Article 2017 ftimperialcol https://doi.org/10.1002/2017GL074954 2018-09-16T06:00:26Z 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. Article in Journal/Newspaper Greenland Ice Sheet Imperial College London: Spiral Greenland Geophysical Research Letters 44 21 |
institution |
Open Polar |
collection |
Imperial College London: Spiral |
op_collection_id |
ftimperialcol |
language |
unknown |
topic |
MD Multidisciplinary Meteorology & Atmospheric Sciences |
spellingShingle |
MD Multidisciplinary Meteorology & Atmospheric Sciences Morlighem, M Williams, C Rignot, E An, L Bamber, J Chauche, N Dowdeswell, J Dorschel, B Holland, DM Holland, D Howat, I Hubbard, A Jordan, T Millan, R Mouginot, J Noel, B O’Cofaigh, C Seroussi, H Siegert, M Slabon, P Van den Broeke, M Weinrebe, W BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation |
topic_facet |
MD Multidisciplinary Meteorology & Atmospheric Sciences |
description |
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. |
author2 |
Natural Environment Research Council (NERC) Natural Environment Research Council (NERC) |
format |
Article in Journal/Newspaper |
author |
Morlighem, M Williams, C Rignot, E An, L Bamber, J Chauche, N Dowdeswell, J Dorschel, B Holland, DM Holland, D Howat, I Hubbard, A Jordan, T Millan, R Mouginot, J Noel, B O’Cofaigh, C Seroussi, H Siegert, M Slabon, P Van den Broeke, M Weinrebe, W |
author_facet |
Morlighem, M Williams, C Rignot, E An, L Bamber, J Chauche, N Dowdeswell, J Dorschel, B Holland, DM Holland, D Howat, I Hubbard, A Jordan, T Millan, R Mouginot, J Noel, B O’Cofaigh, C Seroussi, H Siegert, M Slabon, P Van den Broeke, M Weinrebe, W |
author_sort |
Morlighem, M |
title |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation |
title_short |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation |
title_full |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation |
title_fullStr |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation |
title_full_unstemmed |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam radar sounding combined with mass conservation |
title_sort |
bedmachine v3: complete bed topography and ocean bathymetry mapping of greenland from multi-beam radar sounding combined with mass conservation |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
http://hdl.handle.net/10044/1/51033 https://doi.org/10.1002/2017GL074954 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
11,061 11,051 |
op_relation |
Geophysical Research Letters |
op_rights |
©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/2017GL074954 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
21 |
_version_ |
1766011921268473856 |