Ocean circulation beneath the Ronne ice shelf
THE intimate thermal contact between the base of Antarctic ice shelves and the underlying ocean enables changes in climate to have a rapid impact on the outflow of ice from the interior of Antarctica1,2. Furthermore, water modified by passage under ice shelves, particularly in the Weddell Sea, is be...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/520115/ https://doi.org/10.1038/354221a0 |
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ftnerc:oai:nora.nerc.ac.uk:520115 2023-05-15T13:49:35+02:00 Ocean circulation beneath the Ronne ice shelf Nicholls, Keith W. Makinson, Keith Robinson, A. V. 1991-11 http://nora.nerc.ac.uk/id/eprint/520115/ https://doi.org/10.1038/354221a0 unknown Nicholls, Keith W. orcid:0000-0002-2188-4509 Makinson, Keith orcid:0000-0002-5791-1767 Robinson, A. V. 1991 Ocean circulation beneath the Ronne ice shelf. Nature, 354 (6350). 221-223. https://doi.org/10.1038/354221a0 <https://doi.org/10.1038/354221a0> Publication - Article PeerReviewed 1991 ftnerc https://doi.org/10.1038/354221a0 2023-02-04T19:46:36Z THE intimate thermal contact between the base of Antarctic ice shelves and the underlying ocean enables changes in climate to have a rapid impact on the outflow of ice from the interior of Antarctica1,2. Furthermore, water modified by passage under ice shelves, particularly in the Weddell Sea, is believed to be an important constituent of Antarctic Bottom Water3—a water mass that can be observed as far north as 50° N in the deep oceans4. Antarctic Bottom Water is both cold and oxygen-rich, and plays an important part in the cooling and ventilation of the world's oceans. Because of the difficulty in gaining access, the oceano-graphic regime beneath ice shelves is very poorly sampled5. By successfully drilling through the ice, however, we were able to obtain oceanographic data from beneath the largest Antarctic ice shelf, the Ronne–Filchner ice shelf in the southern Weddell Sea. We find that our data agree well with the predictions of a relatively simple oceanographic plume model of sub-ice-shelf circulation6. This model can therefore be used with some confidence to investigate the links between climate changes, ice-shelf melting and bottom-water production. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Ice Shelves Ronne Ice Shelf Weddell Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Weddell Sea Weddell Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Filchner Ice Shelf ENVELOPE(-40.000,-40.000,-79.000,-79.000) Nature 354 6350 221 223 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
THE intimate thermal contact between the base of Antarctic ice shelves and the underlying ocean enables changes in climate to have a rapid impact on the outflow of ice from the interior of Antarctica1,2. Furthermore, water modified by passage under ice shelves, particularly in the Weddell Sea, is believed to be an important constituent of Antarctic Bottom Water3—a water mass that can be observed as far north as 50° N in the deep oceans4. Antarctic Bottom Water is both cold and oxygen-rich, and plays an important part in the cooling and ventilation of the world's oceans. Because of the difficulty in gaining access, the oceano-graphic regime beneath ice shelves is very poorly sampled5. By successfully drilling through the ice, however, we were able to obtain oceanographic data from beneath the largest Antarctic ice shelf, the Ronne–Filchner ice shelf in the southern Weddell Sea. We find that our data agree well with the predictions of a relatively simple oceanographic plume model of sub-ice-shelf circulation6. This model can therefore be used with some confidence to investigate the links between climate changes, ice-shelf melting and bottom-water production. |
format |
Article in Journal/Newspaper |
author |
Nicholls, Keith W. Makinson, Keith Robinson, A. V. |
spellingShingle |
Nicholls, Keith W. Makinson, Keith Robinson, A. V. Ocean circulation beneath the Ronne ice shelf |
author_facet |
Nicholls, Keith W. Makinson, Keith Robinson, A. V. |
author_sort |
Nicholls, Keith W. |
title |
Ocean circulation beneath the Ronne ice shelf |
title_short |
Ocean circulation beneath the Ronne ice shelf |
title_full |
Ocean circulation beneath the Ronne ice shelf |
title_fullStr |
Ocean circulation beneath the Ronne ice shelf |
title_full_unstemmed |
Ocean circulation beneath the Ronne ice shelf |
title_sort |
ocean circulation beneath the ronne ice shelf |
publishDate |
1991 |
url |
http://nora.nerc.ac.uk/id/eprint/520115/ https://doi.org/10.1038/354221a0 |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-40.000,-40.000,-79.000,-79.000) |
geographic |
Antarctic Weddell Sea Weddell Ronne Ice Shelf Filchner Ice Shelf |
geographic_facet |
Antarctic Weddell Sea Weddell Ronne Ice Shelf Filchner Ice Shelf |
genre |
Antarc* Antarctic Ice Shelf Ice Shelves Ronne Ice Shelf Weddell Sea |
genre_facet |
Antarc* Antarctic Ice Shelf Ice Shelves Ronne Ice Shelf Weddell Sea |
op_relation |
Nicholls, Keith W. orcid:0000-0002-2188-4509 Makinson, Keith orcid:0000-0002-5791-1767 Robinson, A. V. 1991 Ocean circulation beneath the Ronne ice shelf. Nature, 354 (6350). 221-223. https://doi.org/10.1038/354221a0 <https://doi.org/10.1038/354221a0> |
op_doi |
https://doi.org/10.1038/354221a0 |
container_title |
Nature |
container_volume |
354 |
container_issue |
6350 |
container_start_page |
221 |
op_container_end_page |
223 |
_version_ |
1766251773740187648 |