Summertime water masses off the northern Larsen C Ice Shelf, Antarctica
We report on oceanographic observations made at the northern end of Larsen C Ice Shelf in the western Weddell Sea. It appears that the Larsen C continental shelf is flushed not by High Salinity Shelf Water from the southern continental shelf, but by Modified Weddell Deep Water (MWDW) flowing across...
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American Geophysical Union
2004
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ftnerc:oai:nora.nerc.ac.uk:12321 2023-05-15T13:45:11+02:00 Summertime water masses off the northern Larsen C Ice Shelf, Antarctica Nicholls, K.W. Pudsey, C.J. Morris, P. 2004 http://nora.nerc.ac.uk/id/eprint/12321/ http://www.agu.org/journals/gl/gl0409/2004GL019924/index.html unknown American Geophysical Union Nicholls, K.W. orcid:0000-0002-2188-4509 Pudsey, C.J.; Morris, P. 2004 Summertime water masses off the northern Larsen C Ice Shelf, Antarctica. Geophysical Research Letters, 31 (9), L09309. 4, pp. https://doi.org/10.1029/2004GL019924 <https://doi.org/10.1029/2004GL019924> Marine Sciences Glaciology Publication - Article PeerReviewed 2004 ftnerc https://doi.org/10.1029/2004GL019924 2023-02-04T19:27:55Z We report on oceanographic observations made at the northern end of Larsen C Ice Shelf in the western Weddell Sea. It appears that the Larsen C continental shelf is flushed not by High Salinity Shelf Water from the southern continental shelf, but by Modified Weddell Deep Water (MWDW) flowing across the shelf break. MWDW is observed at the ice front, having tracked west along the northward facing slopes of depressions that reach to the shelf break. Ice Shelf Water observed near the ice front is not, however, derived from MWDW directly, but from MWDW pre-conditioned by winter cooling and by salinification from sea ice production. If the ice shelf base generally is being melted only by pre-conditioned MWDW, then, contrary to recent suggestions, changes in the temperature of the deep Weddell Sea are unlikely to have a major impact on melt rates at the base of Larsen C Ice Shelf. Article in Journal/Newspaper Antarc* Antarctica Ice Shelf Sea ice Weddell Sea Natural Environment Research Council: NERC Open Research Archive Weddell Sea Weddell Geophysical Research Letters 31 9 n/a n/a |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Glaciology |
spellingShingle |
Marine Sciences Glaciology Nicholls, K.W. Pudsey, C.J. Morris, P. Summertime water masses off the northern Larsen C Ice Shelf, Antarctica |
topic_facet |
Marine Sciences Glaciology |
description |
We report on oceanographic observations made at the northern end of Larsen C Ice Shelf in the western Weddell Sea. It appears that the Larsen C continental shelf is flushed not by High Salinity Shelf Water from the southern continental shelf, but by Modified Weddell Deep Water (MWDW) flowing across the shelf break. MWDW is observed at the ice front, having tracked west along the northward facing slopes of depressions that reach to the shelf break. Ice Shelf Water observed near the ice front is not, however, derived from MWDW directly, but from MWDW pre-conditioned by winter cooling and by salinification from sea ice production. If the ice shelf base generally is being melted only by pre-conditioned MWDW, then, contrary to recent suggestions, changes in the temperature of the deep Weddell Sea are unlikely to have a major impact on melt rates at the base of Larsen C Ice Shelf. |
format |
Article in Journal/Newspaper |
author |
Nicholls, K.W. Pudsey, C.J. Morris, P. |
author_facet |
Nicholls, K.W. Pudsey, C.J. Morris, P. |
author_sort |
Nicholls, K.W. |
title |
Summertime water masses off the northern Larsen C Ice Shelf, Antarctica |
title_short |
Summertime water masses off the northern Larsen C Ice Shelf, Antarctica |
title_full |
Summertime water masses off the northern Larsen C Ice Shelf, Antarctica |
title_fullStr |
Summertime water masses off the northern Larsen C Ice Shelf, Antarctica |
title_full_unstemmed |
Summertime water masses off the northern Larsen C Ice Shelf, Antarctica |
title_sort |
summertime water masses off the northern larsen c ice shelf, antarctica |
publisher |
American Geophysical Union |
publishDate |
2004 |
url |
http://nora.nerc.ac.uk/id/eprint/12321/ http://www.agu.org/journals/gl/gl0409/2004GL019924/index.html |
geographic |
Weddell Sea Weddell |
geographic_facet |
Weddell Sea Weddell |
genre |
Antarc* Antarctica Ice Shelf Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctica Ice Shelf Sea ice Weddell Sea |
op_relation |
Nicholls, K.W. orcid:0000-0002-2188-4509 Pudsey, C.J.; Morris, P. 2004 Summertime water masses off the northern Larsen C Ice Shelf, Antarctica. Geophysical Research Letters, 31 (9), L09309. 4, pp. https://doi.org/10.1029/2004GL019924 <https://doi.org/10.1029/2004GL019924> |
op_doi |
https://doi.org/10.1029/2004GL019924 |
container_title |
Geophysical Research Letters |
container_volume |
31 |
container_issue |
9 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766215033637830656 |