BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo 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...
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2017
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Online Access: | https://www.repository.cam.ac.uk/handle/1810/271052 https://doi.org/10.17863/CAM.18014 |
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ftunivcam:oai:www.repository.cam.ac.uk:1810/271052 2024-02-04T10:00:38+01:00 BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. Morlighem, M Williams, CN Rignot, E An, L Arndt, JE Bamber, JL Catania, G Chauché, N Dowdeswell, JA Dorschel, B Fenty, I Hogan, K Howat, I Hubbard, A Jakobsson, M Jordan, TM Kjeldsen, KK Millan, R Mayer, L Mouginot, J Noël, BPY O'Cofaigh, C Palmer, S Rysgaard, S Seroussi, H Siegert, MJ Slabon, P Straneo, F van den Broeke, MR Weinrebe, W Wood, M Zinglersen, KB 2017-11-16 Print-Electronic application/pdf https://www.repository.cam.ac.uk/handle/1810/271052 https://doi.org/10.17863/CAM.18014 eng eng American Geophysical Union (AGU) http://dx.doi.org/10.1002/2017gl074954 Geophys Res Lett https://www.repository.cam.ac.uk/handle/1810/271052 doi:10.17863/CAM.18014 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ Greenland bathymetry glaciology mass conservation multibeam echo sounding radar echo sounding Article 2017 ftunivcam https://doi.org/10.17863/CAM.18014 2024-01-11T23:23:33Z 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 Apollo - University of Cambridge Repository Greenland |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Greenland bathymetry glaciology mass conservation multibeam echo sounding radar echo sounding |
spellingShingle |
Greenland bathymetry glaciology mass conservation multibeam echo sounding radar echo sounding Morlighem, M Williams, CN Rignot, E An, L Arndt, JE Bamber, JL Catania, G Chauché, N Dowdeswell, JA Dorschel, B Fenty, I Hogan, K Howat, I Hubbard, A Jakobsson, M Jordan, TM Kjeldsen, KK Millan, R Mayer, L Mouginot, J Noël, BPY O'Cofaigh, C Palmer, S Rysgaard, S Seroussi, H Siegert, MJ Slabon, P Straneo, F van den Broeke, MR Weinrebe, W Wood, M Zinglersen, KB BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. |
topic_facet |
Greenland bathymetry glaciology mass conservation multibeam echo sounding radar echo sounding |
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. |
format |
Article in Journal/Newspaper |
author |
Morlighem, M Williams, CN Rignot, E An, L Arndt, JE Bamber, JL Catania, G Chauché, N Dowdeswell, JA Dorschel, B Fenty, I Hogan, K Howat, I Hubbard, A Jakobsson, M Jordan, TM Kjeldsen, KK Millan, R Mayer, L Mouginot, J Noël, BPY O'Cofaigh, C Palmer, S Rysgaard, S Seroussi, H Siegert, MJ Slabon, P Straneo, F van den Broeke, MR Weinrebe, W Wood, M Zinglersen, KB |
author_facet |
Morlighem, M Williams, CN Rignot, E An, L Arndt, JE Bamber, JL Catania, G Chauché, N Dowdeswell, JA Dorschel, B Fenty, I Hogan, K Howat, I Hubbard, A Jakobsson, M Jordan, TM Kjeldsen, KK Millan, R Mayer, L Mouginot, J Noël, BPY O'Cofaigh, C Palmer, S Rysgaard, S Seroussi, H Siegert, MJ Slabon, P Straneo, F van den Broeke, MR Weinrebe, W Wood, M Zinglersen, KB |
author_sort |
Morlighem, M |
title |
BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. |
title_short |
BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. |
title_full |
BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. |
title_fullStr |
BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. |
title_full_unstemmed |
BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. |
title_sort |
bedmachine v3: complete bed topography and ocean bathymetry mapping of greenland from multibeam echo sounding combined with mass conservation. |
publisher |
American Geophysical Union (AGU) |
publishDate |
2017 |
url |
https://www.repository.cam.ac.uk/handle/1810/271052 https://doi.org/10.17863/CAM.18014 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/271052 doi:10.17863/CAM.18014 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.18014 |
_version_ |
1789966033083170816 |