Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology
The Amundsen Sea continental shelf is one of the most remote areas of coastal Antarctica and was relatively unexplored until the late 1980s. Over the last two decades, increased oceanographic and geological interest has led to several cruises that resulted in sufficient bathymetric data to compile a...
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American Geophysical Union
2007
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ftnerc:oai:nora.nerc.ac.uk:11852 2023-05-15T13:23:37+02:00 Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology Nitsche, F.O. Jacobs, S.S. Larter, R.D. Gohl, K. 2007 http://nora.nerc.ac.uk/id/eprint/11852/ unknown American Geophysical Union Nitsche, F.O.; Jacobs, S.S.; Larter, R.D. orcid:0000-0002-8414-7389 Gohl, K. 2007 Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology. Geochemistry, Geophysics, Geosystems, 8 (10), Q10009. 10, pp. https://doi.org/10.1029/2007GC001694 <https://doi.org/10.1029/2007GC001694> Marine Sciences Glaciology Earth Sciences Publication - Article PeerReviewed 2007 ftnerc https://doi.org/10.1029/2007GC001694 2023-02-04T19:27:39Z The Amundsen Sea continental shelf is one of the most remote areas of coastal Antarctica and was relatively unexplored until the late 1980s. Over the last two decades, increased oceanographic and geological interest has led to several cruises that resulted in sufficient bathymetric data to compile a fairly detailed regional map of the Amundsen continental shelf. We have combined available multibeam and single-beam bathymetry data from various sources and created a new regional bathymetry of the Amundsen Sea continental shelf and margin. Deep trough systems that dominate the inner shelf are aligned with present glaciers and separated by shallower ridges. Shaped by paleo-ice streams, these features merge into a small number of broader troughs on the middle shelf and shoal seaward. They now serve as conduits and reservoirs for relatively warm Circumpolar Deep Water. This new compilation is a major improvement over previously available regional maps and should aid the numerical modeling of ocean circulation, the reconstructions of paleo-ice streams, and the refinement of ice sheet models. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Ice Sheet Natural Environment Research Council: NERC Open Research Archive Amundsen Sea Geochemistry, Geophysics, Geosystems 8 10 n/a n/a |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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unknown |
topic |
Marine Sciences Glaciology Earth Sciences |
spellingShingle |
Marine Sciences Glaciology Earth Sciences Nitsche, F.O. Jacobs, S.S. Larter, R.D. Gohl, K. Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology |
topic_facet |
Marine Sciences Glaciology Earth Sciences |
description |
The Amundsen Sea continental shelf is one of the most remote areas of coastal Antarctica and was relatively unexplored until the late 1980s. Over the last two decades, increased oceanographic and geological interest has led to several cruises that resulted in sufficient bathymetric data to compile a fairly detailed regional map of the Amundsen continental shelf. We have combined available multibeam and single-beam bathymetry data from various sources and created a new regional bathymetry of the Amundsen Sea continental shelf and margin. Deep trough systems that dominate the inner shelf are aligned with present glaciers and separated by shallower ridges. Shaped by paleo-ice streams, these features merge into a small number of broader troughs on the middle shelf and shoal seaward. They now serve as conduits and reservoirs for relatively warm Circumpolar Deep Water. This new compilation is a major improvement over previously available regional maps and should aid the numerical modeling of ocean circulation, the reconstructions of paleo-ice streams, and the refinement of ice sheet models. |
format |
Article in Journal/Newspaper |
author |
Nitsche, F.O. Jacobs, S.S. Larter, R.D. Gohl, K. |
author_facet |
Nitsche, F.O. Jacobs, S.S. Larter, R.D. Gohl, K. |
author_sort |
Nitsche, F.O. |
title |
Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology |
title_short |
Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology |
title_full |
Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology |
title_fullStr |
Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology |
title_full_unstemmed |
Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology |
title_sort |
bathymetry of the amundsen sea continental shelf: implications for geology, oceanography, and glaciology |
publisher |
American Geophysical Union |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/11852/ |
geographic |
Amundsen Sea |
geographic_facet |
Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctica Ice Sheet |
genre_facet |
Amundsen Sea Antarc* Antarctica Ice Sheet |
op_relation |
Nitsche, F.O.; Jacobs, S.S.; Larter, R.D. orcid:0000-0002-8414-7389 Gohl, K. 2007 Bathymetry of the Amundsen Sea continental shelf: implications for geology, oceanography, and glaciology. Geochemistry, Geophysics, Geosystems, 8 (10), Q10009. 10, pp. https://doi.org/10.1029/2007GC001694 <https://doi.org/10.1029/2007GC001694> |
op_doi |
https://doi.org/10.1029/2007GC001694 |
container_title |
Geochemistry, Geophysics, Geosystems |
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8 |
container_issue |
10 |
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n/a |
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n/a |
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1766373629243686912 |