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...
Published in: | Geophysical Research Letters |
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2017
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5726375/ https://doi.org/10.1002/2017GL074954 |
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ftpubmed:oai:pubmedcentral.nih.gov:5726375 2023-05-15T16:23:40+02:00 BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation Morlighem, M. Williams, C. N. Rignot, E. An, L. Arndt, J. E. Bamber, J. L. Catania, G. Chauché, N. Dowdeswell, J. A. Dorschel, B. Fenty, I. Hogan, K. Howat, I. Hubbard, A. Jakobsson, M. Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. O'Cofaigh, C. Palmer, S. Rysgaard, S. Seroussi, H. Siegert, M. J. Slabon, P. Straneo, F. van den Broeke, M. R. Weinrebe, W. Wood, M. Zinglersen, K. B. 2017-11-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5726375/ https://doi.org/10.1002/2017GL074954 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5726375/ http://dx.doi.org/10.1002/2017GL074954 ©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/3.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Research Letters Text 2017 ftpubmed https://doi.org/10.1002/2017GL074954 2017-12-24T01:13:26Z 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. Text Greenland Ice Sheet PubMed Central (PMC) Greenland Geophysical Research Letters 44 21 |
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Open Polar |
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PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Research Letters |
spellingShingle |
Research Letters Morlighem, M. Williams, C. N. Rignot, E. An, L. Arndt, J. E. Bamber, J. L. Catania, G. Chauché, N. Dowdeswell, J. A. Dorschel, B. Fenty, I. Hogan, K. Howat, I. Hubbard, A. Jakobsson, M. Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. O'Cofaigh, C. Palmer, S. Rysgaard, S. Seroussi, H. Siegert, M. J. Slabon, P. Straneo, F. van den Broeke, M. R. Weinrebe, W. Wood, M. Zinglersen, K. B. BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation |
topic_facet |
Research Letters |
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 |
Text |
author |
Morlighem, M. Williams, C. N. Rignot, E. An, L. Arndt, J. E. Bamber, J. L. Catania, G. Chauché, N. Dowdeswell, J. A. Dorschel, B. Fenty, I. Hogan, K. Howat, I. Hubbard, A. Jakobsson, M. Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. O'Cofaigh, C. Palmer, S. Rysgaard, S. Seroussi, H. Siegert, M. J. Slabon, P. Straneo, F. van den Broeke, M. R. Weinrebe, W. Wood, M. Zinglersen, K. B. |
author_facet |
Morlighem, M. Williams, C. N. Rignot, E. An, L. Arndt, J. E. Bamber, J. L. Catania, G. Chauché, N. Dowdeswell, J. A. Dorschel, B. Fenty, I. Hogan, K. Howat, I. Hubbard, A. Jakobsson, M. Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. O'Cofaigh, C. Palmer, S. Rysgaard, S. Seroussi, H. Siegert, M. J. Slabon, P. Straneo, F. van den Broeke, M. R. Weinrebe, W. Wood, M. Zinglersen, K. B. |
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 |
John Wiley and Sons Inc. |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5726375/ https://doi.org/10.1002/2017GL074954 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5726375/ http://dx.doi.org/10.1002/2017GL074954 |
op_rights |
©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/3.0/) 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_ |
1766011919336996864 |