A high-resolution bedrock map for the Antarctic Peninsula
Assessing and projecting the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ice flow models. Here, we derive a complete bedrock data set for the Antarctic Peninsul...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2014
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Online Access: | https://doi.org/10.5194/tc-8-1261-2014 http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf https://doaj.org/article/04100345a7d44952841c237f125092fa |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:04100345a7d44952841c237f125092fa 2023-05-15T13:37:01+02:00 A high-resolution bedrock map for the Antarctic Peninsula M. Huss D. Farinotti 2014-07-01 https://doi.org/10.5194/tc-8-1261-2014 http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf https://doaj.org/article/04100345a7d44952841c237f125092fa en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-8-1261-2014 http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf https://doaj.org/article/04100345a7d44952841c237f125092fa undefined The Cryosphere, Vol 8, Iss 4, Pp 1261-1273 (2014) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.5194/tc-8-1261-2014 2023-01-22T19:35:08Z Assessing and projecting the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ice flow models. Here, we derive a complete bedrock data set for the Antarctic Peninsula north of 70° S on a 100 m grid. We calculate distributed ice thickness based on surface topography and simple ice dynamic modelling. Our approach is constrained with all available thickness measurements from Operation IceBridge and gridded ice flow speeds for the entire study region. The new data set resolves the rugged subglacial topography in great detail, indicates deeply incised troughs, and shows that 34% of the ice volume is grounded below sea level. The Antarctic Peninsula has the potential to raise global sea level by 69 ± 5 mm. In comparison to Bedmap2, covering all Antarctica on a 1 km grid, a significantly higher mean ice thickness (+48%) is found. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica The Cryosphere Unknown Antarctic Antarctic Peninsula The Antarctic The Cryosphere 8 4 1261 1273 |
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Open Polar |
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fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir M. Huss D. Farinotti A high-resolution bedrock map for the Antarctic Peninsula |
topic_facet |
geo envir |
description |
Assessing and projecting the dynamic response of glaciers on the Antarctic Peninsula to changed atmospheric and oceanic forcing requires high-resolution ice thickness data as an essential geometric constraint for ice flow models. Here, we derive a complete bedrock data set for the Antarctic Peninsula north of 70° S on a 100 m grid. We calculate distributed ice thickness based on surface topography and simple ice dynamic modelling. Our approach is constrained with all available thickness measurements from Operation IceBridge and gridded ice flow speeds for the entire study region. The new data set resolves the rugged subglacial topography in great detail, indicates deeply incised troughs, and shows that 34% of the ice volume is grounded below sea level. The Antarctic Peninsula has the potential to raise global sea level by 69 ± 5 mm. In comparison to Bedmap2, covering all Antarctica on a 1 km grid, a significantly higher mean ice thickness (+48%) is found. |
format |
Article in Journal/Newspaper |
author |
M. Huss D. Farinotti |
author_facet |
M. Huss D. Farinotti |
author_sort |
M. Huss |
title |
A high-resolution bedrock map for the Antarctic Peninsula |
title_short |
A high-resolution bedrock map for the Antarctic Peninsula |
title_full |
A high-resolution bedrock map for the Antarctic Peninsula |
title_fullStr |
A high-resolution bedrock map for the Antarctic Peninsula |
title_full_unstemmed |
A high-resolution bedrock map for the Antarctic Peninsula |
title_sort |
high-resolution bedrock map for the antarctic peninsula |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/tc-8-1261-2014 http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf https://doaj.org/article/04100345a7d44952841c237f125092fa |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica The Cryosphere |
op_source |
The Cryosphere, Vol 8, Iss 4, Pp 1261-1273 (2014) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-8-1261-2014 http://www.the-cryosphere.net/8/1261/2014/tc-8-1261-2014.pdf https://doaj.org/article/04100345a7d44952841c237f125092fa |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-8-1261-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
4 |
container_start_page |
1261 |
op_container_end_page |
1273 |
_version_ |
1766087027520962560 |