BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam 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 |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Wiley
2017
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/45537/ https://hdl.handle.net/10013/epic.52018 |
id |
ftawi:oai:epic.awi.de:45537 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:45537 2024-09-15T18:08:20+00:00 BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation Morlighem, Mathieu Williams, C. N. Rignot, Eric An, L. Arndt, Jan Erik Bamber, Jonathan L. Catania, G. Chauché, N. Dowdeswell, Julian A. Dorschel, Boris Fenty, Ian Hogan, Kelly Howat, I. Hubbard, A. Jakobsson, Martin Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. Ó Cofaigh, Colm Palmer, S. Rysgaard, S. Seroussi, H. Siegert, Martin J. Slabon, Patricia Straneo, F. van den Broeke, M. R. Weinrebe, W. Wood, M. Zinglersen, K. B. 2017 https://epic.awi.de/id/eprint/45537/ https://hdl.handle.net/10013/epic.52018 unknown Wiley Morlighem, M. , Williams, C. N. , Rignot, E. , An, L. , Arndt, J. E. orcid:0000-0002-9413-1612 , Bamber, J. L. , Catania, G. , Chauché, N. , Dowdeswell, J. A. , Dorschel, B. orcid:0000-0002-3495-5927 , 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. , Ó Cofaigh, C. , Palmer, S. , Rysgaard, S. , Seroussi, H. , Siegert, M. J. , Slabon, P. , Straneo, F. , van den Broeke, M. R. , Weinrebe, W. , Wood, M. and Zinglersen, K. B. (2017) BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation , Geophysical Research Letters, 44 (21), pp. 11051-11061 . doi:10.1002/2017GL074954 <https://doi.org/10.1002/2017GL074954> , hdl:10013/epic.52018 EPIC3Geophysical Research Letters, Wiley, 44(21), pp. 11051-11061 Article isiRev 2017 ftawi https://doi.org/10.1002/2017GL074954 2024-06-24T04:18:50Z 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 (MC) 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 datasets, particularly in the marine-terminating sectors of northwest and southeast Greenland. Our map reveals 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Geophysical Research Letters 44 21 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 (MC) 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 datasets, particularly in the marine-terminating sectors of northwest and southeast Greenland. Our map reveals 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, Mathieu Williams, C. N. Rignot, Eric An, L. Arndt, Jan Erik Bamber, Jonathan L. Catania, G. Chauché, N. Dowdeswell, Julian A. Dorschel, Boris Fenty, Ian Hogan, Kelly Howat, I. Hubbard, A. Jakobsson, Martin Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. Ó Cofaigh, Colm Palmer, S. Rysgaard, S. Seroussi, H. Siegert, Martin J. Slabon, Patricia Straneo, F. van den Broeke, M. R. Weinrebe, W. Wood, M. Zinglersen, K. B. |
spellingShingle |
Morlighem, Mathieu Williams, C. N. Rignot, Eric An, L. Arndt, Jan Erik Bamber, Jonathan L. Catania, G. Chauché, N. Dowdeswell, Julian A. Dorschel, Boris Fenty, Ian Hogan, Kelly Howat, I. Hubbard, A. Jakobsson, Martin Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. Ó Cofaigh, Colm Palmer, S. Rysgaard, S. Seroussi, H. Siegert, Martin J. Slabon, Patricia 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 multi-beam echo sounding combined with mass conservation |
author_facet |
Morlighem, Mathieu Williams, C. N. Rignot, Eric An, L. Arndt, Jan Erik Bamber, Jonathan L. Catania, G. Chauché, N. Dowdeswell, Julian A. Dorschel, Boris Fenty, Ian Hogan, Kelly Howat, I. Hubbard, A. Jakobsson, Martin Jordan, T. M. Kjeldsen, K. K. Millan, R. Mayer, L. Mouginot, J. Noël, B. P. Y. Ó Cofaigh, Colm Palmer, S. Rysgaard, S. Seroussi, H. Siegert, Martin J. Slabon, Patricia Straneo, F. van den Broeke, M. R. Weinrebe, W. Wood, M. Zinglersen, K. B. |
author_sort |
Morlighem, Mathieu |
title |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation |
title_short |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation |
title_full |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation |
title_fullStr |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation |
title_full_unstemmed |
BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation |
title_sort |
bedmachine v3: complete bed topography and ocean bathymetry mapping of greenland from multi-beam echo sounding combined with mass conservation |
publisher |
Wiley |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/45537/ https://hdl.handle.net/10013/epic.52018 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
EPIC3Geophysical Research Letters, Wiley, 44(21), pp. 11051-11061 |
op_relation |
Morlighem, M. , Williams, C. N. , Rignot, E. , An, L. , Arndt, J. E. orcid:0000-0002-9413-1612 , Bamber, J. L. , Catania, G. , Chauché, N. , Dowdeswell, J. A. , Dorschel, B. orcid:0000-0002-3495-5927 , 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. , Ó Cofaigh, C. , Palmer, S. , Rysgaard, S. , Seroussi, H. , Siegert, M. J. , Slabon, P. , Straneo, F. , van den Broeke, M. R. , Weinrebe, W. , Wood, M. and Zinglersen, K. B. (2017) BedMachine v3: Complete bed topography and ocean bathymetry mapping of Greenland from multi-beam echo sounding combined with mass conservation , Geophysical Research Letters, 44 (21), pp. 11051-11061 . doi:10.1002/2017GL074954 <https://doi.org/10.1002/2017GL074954> , hdl:10013/epic.52018 |
op_doi |
https://doi.org/10.1002/2017GL074954 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
21 |
_version_ |
1810445655529750528 |