Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry
Satellite radar altimetry can be used to infer the thickness of floating ice shelves around Antarctica under the assumption of hydrostatic equilibrium. Ice shelf thickness is an essential parameter in mass budget calculations and is one of the more poorly characterised. Using data from the ERS-1 rad...
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Online Access: | https://hdl.handle.net/1983/7e1abbda-fbb0-48b2-b206-8586285844da https://research-information.bris.ac.uk/en/publications/7e1abbda-fbb0-48b2-b206-8586285844da https://doi.org/10.1029/2009GL039527 |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/7e1abbda-fbb0-48b2-b206-8586285844da 2024-01-28T10:01:38+01:00 Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry Griggs, JA Bamber, JL 2009 https://hdl.handle.net/1983/7e1abbda-fbb0-48b2-b206-8586285844da https://research-information.bris.ac.uk/en/publications/7e1abbda-fbb0-48b2-b206-8586285844da https://doi.org/10.1029/2009GL039527 eng eng info:eu-repo/semantics/restrictedAccess Griggs , JA & Bamber , JL 2009 , ' Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry ' , Geophysical Research Letters , vol. 36 , pp. L19501 . https://doi.org/10.1029/2009GL039527 article 2009 ftubristolcris https://doi.org/10.1029/2009GL039527 2024-01-04T23:31:49Z Satellite radar altimetry can be used to infer the thickness of floating ice shelves around Antarctica under the assumption of hydrostatic equilibrium. Ice shelf thickness is an essential parameter in mass budget calculations and is one of the more poorly characterised. Using data from the ERS-1 radar altimeter recorded in 1994–5, we calculate the thickness of Larsen C ice shelf on the Antarctic Peninsula. The surface elevation was determined to an accuracy of -2.3 ± 4.35 m as compared to elevations from the laser altimeter onboard ICESat. Using a model for firn depth and density, we created a 1 km grid of ice shelf thickness for Larsen C. The accuracy of the ice thickness e retrieval was determined from independent airborne radio echo sounding data. The results indicated a bias of -0.22 m and random error of 36.7 m, which is equivalent to 12.7% of the mean thickness for this ice shelf. Satellite radar altimetry can be used to infer the thickness of floating ice shelves around Antarctica under the assumption of hydrostatic equilibrium. Ice shelf thickness is an essential parameter in mass budget calculations and is one of the more poorly characterised. Using data from the ERS-1 radar altimeter recorded in 1994–5, we calculate the thickness of Larsen C ice shelf on the Antarctic Peninsula. The surface elevation was determined to an accuracy of -2.3 ± 4.35 m as compared to elevations from the laser altimeter onboard ICESat. Using a model for firn depth and density, we created a 1 km grid of ice shelf thickness for Larsen C. The accuracy of the ice thickness e retrieval was determined from independent airborne radio echo sounding data. The results indicated a bias of -0.22 m and random error of 36.7 m, which is equivalent to 12.7% of the mean thickness for this ice shelf. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves University of Bristol: Bristol Research Antarctic Antarctic Peninsula The Antarctic Geophysical Research Letters 36 19 |
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University of Bristol: Bristol Research |
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ftubristolcris |
language |
English |
description |
Satellite radar altimetry can be used to infer the thickness of floating ice shelves around Antarctica under the assumption of hydrostatic equilibrium. Ice shelf thickness is an essential parameter in mass budget calculations and is one of the more poorly characterised. Using data from the ERS-1 radar altimeter recorded in 1994–5, we calculate the thickness of Larsen C ice shelf on the Antarctic Peninsula. The surface elevation was determined to an accuracy of -2.3 ± 4.35 m as compared to elevations from the laser altimeter onboard ICESat. Using a model for firn depth and density, we created a 1 km grid of ice shelf thickness for Larsen C. The accuracy of the ice thickness e retrieval was determined from independent airborne radio echo sounding data. The results indicated a bias of -0.22 m and random error of 36.7 m, which is equivalent to 12.7% of the mean thickness for this ice shelf. Satellite radar altimetry can be used to infer the thickness of floating ice shelves around Antarctica under the assumption of hydrostatic equilibrium. Ice shelf thickness is an essential parameter in mass budget calculations and is one of the more poorly characterised. Using data from the ERS-1 radar altimeter recorded in 1994–5, we calculate the thickness of Larsen C ice shelf on the Antarctic Peninsula. The surface elevation was determined to an accuracy of -2.3 ± 4.35 m as compared to elevations from the laser altimeter onboard ICESat. Using a model for firn depth and density, we created a 1 km grid of ice shelf thickness for Larsen C. The accuracy of the ice thickness e retrieval was determined from independent airborne radio echo sounding data. The results indicated a bias of -0.22 m and random error of 36.7 m, which is equivalent to 12.7% of the mean thickness for this ice shelf. |
format |
Article in Journal/Newspaper |
author |
Griggs, JA Bamber, JL |
spellingShingle |
Griggs, JA Bamber, JL Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry |
author_facet |
Griggs, JA Bamber, JL |
author_sort |
Griggs, JA |
title |
Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry |
title_short |
Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry |
title_full |
Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry |
title_fullStr |
Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry |
title_full_unstemmed |
Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry |
title_sort |
ice shelf thickness over larsen c, antarctica, derived from satellite altimetry |
publishDate |
2009 |
url |
https://hdl.handle.net/1983/7e1abbda-fbb0-48b2-b206-8586285844da https://research-information.bris.ac.uk/en/publications/7e1abbda-fbb0-48b2-b206-8586285844da https://doi.org/10.1029/2009GL039527 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves |
op_source |
Griggs , JA & Bamber , JL 2009 , ' Ice shelf thickness over Larsen C, Antarctica, derived from satellite altimetry ' , Geophysical Research Letters , vol. 36 , pp. L19501 . https://doi.org/10.1029/2009GL039527 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2009GL039527 |
container_title |
Geophysical Research Letters |
container_volume |
36 |
container_issue |
19 |
_version_ |
1789326812746088448 |