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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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2017
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Online Access: | https://orbit.dtu.dk/en/publications/8cdb8bcd-a3ee-48cb-a6a1-09aa267e17ce https://doi.org/10.1002/2017GL074954 https://backend.orbit.dtu.dk/ws/files/140315222/Morlighem_et_al_2017_Geophysical_Research_Letters.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/8cdb8bcd-a3ee-48cb-a6a1-09aa267e17ce 2024-06-23T07:53:07+00:00 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, Kristian Kjellerup 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 application/pdf https://orbit.dtu.dk/en/publications/8cdb8bcd-a3ee-48cb-a6a1-09aa267e17ce https://doi.org/10.1002/2017GL074954 https://backend.orbit.dtu.dk/ws/files/140315222/Morlighem_et_al_2017_Geophysical_Research_Letters.pdf eng eng https://orbit.dtu.dk/en/publications/8cdb8bcd-a3ee-48cb-a6a1-09aa267e17ce info:eu-repo/semantics/openAccess 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 , ' BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation ' , Geophysical Research Letters , vol. 44 , no. 21 , pp. 11,051–11,061 . https://doi.org/10.1002/2017GL074954 Greenland bathymetry mass conservation multibeam echo sounding radar echo sounding glaciology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2017 ftdtupubl https://doi.org/10.1002/2017GL074954 2024-06-11T14:47:43Z 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 Technical University of Denmark: DTU Orbit Greenland Geophysical Research Letters 44 21 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Greenland bathymetry mass conservation multibeam echo sounding radar echo sounding glaciology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Greenland bathymetry mass conservation multibeam echo sounding radar echo sounding glaciology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water 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, Kristian Kjellerup 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 |
Greenland bathymetry mass conservation multibeam echo sounding radar echo sounding glaciology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
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, 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, Kristian Kjellerup 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, Kristian Kjellerup 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 |
publishDate |
2017 |
url |
https://orbit.dtu.dk/en/publications/8cdb8bcd-a3ee-48cb-a6a1-09aa267e17ce https://doi.org/10.1002/2017GL074954 https://backend.orbit.dtu.dk/ws/files/140315222/Morlighem_et_al_2017_Geophysical_Research_Letters.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
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 , ' BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation ' , Geophysical Research Letters , vol. 44 , no. 21 , pp. 11,051–11,061 . https://doi.org/10.1002/2017GL074954 |
op_relation |
https://orbit.dtu.dk/en/publications/8cdb8bcd-a3ee-48cb-a6a1-09aa267e17ce |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017GL074954 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
21 |
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1802644616717008896 |