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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ftcdlib:oai:escholarship.org/ark:/13030/qt4t89q4g7 2023-05-15T16:23:27+02:00 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 11051 - 11061 2017-11-01 application/pdf https://escholarship.org/uc/item/4t89q4g7 unknown eScholarship, University of California qt4t89q4g7 https://escholarship.org/uc/item/4t89q4g7 CC-BY CC-BY Geophysical research letters, vol 44, iss 21 Greenland bathymetry glaciology mass conservation multibeam echo sounding radar echo sounding Meteorology & Atmospheric Sciences article 2017 ftcdlib 2021-05-30T17:54:37Z 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±0.05m, 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 University of California: eScholarship Greenland |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Greenland bathymetry glaciology mass conservation multibeam echo sounding radar echo sounding Meteorology & Atmospheric Sciences |
spellingShingle |
Greenland bathymetry glaciology mass conservation multibeam echo sounding radar echo sounding Meteorology & Atmospheric Sciences 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 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±0.05m, 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 |
eScholarship, University of California |
publishDate |
2017 |
url |
https://escholarship.org/uc/item/4t89q4g7 |
op_coverage |
11051 - 11061 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Geophysical research letters, vol 44, iss 21 |
op_relation |
qt4t89q4g7 https://escholarship.org/uc/item/4t89q4g7 |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766011707386232832 |