Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry
The orbit and instrumental measurement of the Gravity Field and Steady State Ocean Circulation Explorer (GOCE) satellite mission offer the highest ever resolution capabilities for mapping Earth's gravity field from space. However, past analysis predicted that GOCE would not detect changes in ic...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2014
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Online Access: | https://doi.org/10.1002/2014GL060637 http://resolver.tudelft.nl/uuid:b1ae5c0c-ac8c-4650-a53f-361887f8b31a |
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fttudelft:oai:tudelft.nl:uuid:b1ae5c0c-ac8c-4650-a53f-361887f8b31a 2023-07-30T03:56:02+02:00 Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry Bouman, J. (author) Fuchs, M. (author) Ivins, E. (author) Van der Wal, W. (author) Schrama, E.J.O. (author) Visser, P.N.A.M. (author) Horwath, M. (author) 2014-08-20 https://doi.org/10.1002/2014GL060637 http://resolver.tudelft.nl/uuid:b1ae5c0c-ac8c-4650-a53f-361887f8b31a en eng American Geophysical Union Geophysical Research Letters, 41 (16), 2014--0094-8276 https://doi.org/10.1002/2014GL060637 http://resolver.tudelft.nl/uuid:b1ae5c0c-ac8c-4650-a53f-361887f8b31a © 2014 American Geophysical Union basin-scale ice mass change Amundsen Sea Sector Antarctica satellite gravimetry journal article Text 2014 fttudelft https://doi.org/10.1002/2014GL060637 2023-07-08T20:18:39Z The orbit and instrumental measurement of the Gravity Field and Steady State Ocean Circulation Explorer (GOCE) satellite mission offer the highest ever resolution capabilities for mapping Earth's gravity field from space. However, past analysis predicted that GOCE would not detect changes in ice sheet mass. Here we demonstrate that GOCE gravity gradiometry observations can be combined with Gravity Recovery and Climate Experiment (GRACE) gravity data to estimate mass changes in the Amundsen Sea Sector. This refined resolution allows land ice changes within the Pine Island Glacier (PIG), Thwaites Glacier, and Getz Ice Shelf drainage systems to be measured at respectively ?67?±?7, ?63?±?12, and ?55?±?9 Gt/yr over the GOCE observing period of November 2009 to June 2012. This is the most accurate pure satellite gravimetry measurement to date of current mass loss from PIG, known as the “weak underbelly” of West Antarctica because of its retrograde bed slope and high potential for raising future sea level. Space Engineering Aerospace Engineering Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica Getz Ice Shelf Ice Sheet Ice Shelf Pine Island Pine Island Glacier Thwaites Glacier West Antarctica Delft University of Technology: Institutional Repository Amundsen Sea Antarctic Getz ENVELOPE(-145.217,-145.217,-76.550,-76.550) Getz Ice Shelf ENVELOPE(-126.500,-126.500,-74.250,-74.250) Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctica Geophysical Research Letters 41 16 5919 5926 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
basin-scale ice mass change Amundsen Sea Sector Antarctica satellite gravimetry |
spellingShingle |
basin-scale ice mass change Amundsen Sea Sector Antarctica satellite gravimetry Bouman, J. (author) Fuchs, M. (author) Ivins, E. (author) Van der Wal, W. (author) Schrama, E.J.O. (author) Visser, P.N.A.M. (author) Horwath, M. (author) Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry |
topic_facet |
basin-scale ice mass change Amundsen Sea Sector Antarctica satellite gravimetry |
description |
The orbit and instrumental measurement of the Gravity Field and Steady State Ocean Circulation Explorer (GOCE) satellite mission offer the highest ever resolution capabilities for mapping Earth's gravity field from space. However, past analysis predicted that GOCE would not detect changes in ice sheet mass. Here we demonstrate that GOCE gravity gradiometry observations can be combined with Gravity Recovery and Climate Experiment (GRACE) gravity data to estimate mass changes in the Amundsen Sea Sector. This refined resolution allows land ice changes within the Pine Island Glacier (PIG), Thwaites Glacier, and Getz Ice Shelf drainage systems to be measured at respectively ?67?±?7, ?63?±?12, and ?55?±?9 Gt/yr over the GOCE observing period of November 2009 to June 2012. This is the most accurate pure satellite gravimetry measurement to date of current mass loss from PIG, known as the “weak underbelly” of West Antarctica because of its retrograde bed slope and high potential for raising future sea level. Space Engineering Aerospace Engineering |
format |
Article in Journal/Newspaper |
author |
Bouman, J. (author) Fuchs, M. (author) Ivins, E. (author) Van der Wal, W. (author) Schrama, E.J.O. (author) Visser, P.N.A.M. (author) Horwath, M. (author) |
author_facet |
Bouman, J. (author) Fuchs, M. (author) Ivins, E. (author) Van der Wal, W. (author) Schrama, E.J.O. (author) Visser, P.N.A.M. (author) Horwath, M. (author) |
author_sort |
Bouman, J. (author) |
title |
Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry |
title_short |
Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry |
title_full |
Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry |
title_fullStr |
Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry |
title_full_unstemmed |
Antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry |
title_sort |
antarctic outlet glacier mass change resolved at basin scale from satellite gravity gradiometry |
publisher |
American Geophysical Union |
publishDate |
2014 |
url |
https://doi.org/10.1002/2014GL060637 http://resolver.tudelft.nl/uuid:b1ae5c0c-ac8c-4650-a53f-361887f8b31a |
long_lat |
ENVELOPE(-145.217,-145.217,-76.550,-76.550) ENVELOPE(-126.500,-126.500,-74.250,-74.250) ENVELOPE(-101.000,-101.000,-75.000,-75.000) ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Amundsen Sea Antarctic Getz Getz Ice Shelf Pine Island Glacier Thwaites Glacier West Antarctica |
geographic_facet |
Amundsen Sea Antarctic Getz Getz Ice Shelf Pine Island Glacier Thwaites Glacier West Antarctica |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Getz Ice Shelf Ice Sheet Ice Shelf Pine Island Pine Island Glacier Thwaites Glacier West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Getz Ice Shelf Ice Sheet Ice Shelf Pine Island Pine Island Glacier Thwaites Glacier West Antarctica |
op_relation |
Geophysical Research Letters, 41 (16), 2014--0094-8276 https://doi.org/10.1002/2014GL060637 http://resolver.tudelft.nl/uuid:b1ae5c0c-ac8c-4650-a53f-361887f8b31a |
op_rights |
© 2014 American Geophysical Union |
op_doi |
https://doi.org/10.1002/2014GL060637 |
container_title |
Geophysical Research Letters |
container_volume |
41 |
container_issue |
16 |
container_start_page |
5919 |
op_container_end_page |
5926 |
_version_ |
1772810743535632384 |