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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Main Authors: 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
Format: Article in Journal/Newspaper
Language:English
Published: American Geophysical Union (AGU) 2017
Subjects:
Online Access:https://www.repository.cam.ac.uk/handle/1810/271052
https://doi.org/10.17863/CAM.18014
id ftunivcam:oai:www.repository.cam.ac.uk:1810/271052
record_format openpolar
spelling 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
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