Seasonal variability on the northwestern Weddell Sea continental shelf
For the last five decades the Antarctic Peninsula faces the strongest atmospheric warming on Earth with consequences for its glaciers and ice shelves. With more data available it becomes obvious that the fringing ocean also experiences changes which, however, might result from the natural variabilit...
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ftawi:oai:epic.awi.de:20240 2023-05-15T13:39:47+02:00 Seasonal variability on the northwestern Weddell Sea continental shelf Hellmer, Hartmut Schröder, Michael Isla, E. 2009 https://epic.awi.de/id/eprint/20240/ https://hdl.handle.net/10013/epic.32136 unknown Hellmer, H. orcid:0000-0002-9357-9853 , Schröder, M. and Isla, E. (2009) Seasonal variability on the northwestern Weddell Sea continental shelf , EGU General Assembly (OS10), Vienna, Austria. . hdl:10013/epic.32136 EPIC3EGU General Assembly (OS10), Vienna, Austria. Conference notRev 2009 ftawi 2021-12-24T15:33:20Z For the last five decades the Antarctic Peninsula faces the strongest atmospheric warming on Earth with consequences for its glaciers and ice shelves. With more data available it becomes obvious that the fringing ocean also experiences changes which, however, might result from the natural variability of the system. The comparison of hydrographic data from the northwestern Weddell Sea continental shelf covering the austral summers and winters of the past 20 years reveals a distinct front in summer which separates water masses near surface freezing to the south from those warmer and saltier (with the exception of a ~50-m thick bottom layer) to the north. The latter seem to originate from Bransfield Strait, and its southward extension (~64 oS in 2007) towards existing ice shelves might differ from year to year. In winter, these warm waters are replaced by cold shelf water with salinities corresponding to the salty summer bottom layer on the southern continental shelf. The comparison of the two winter cruises in 1989 and 2006 reveals a significant freshening (~0.1) of the whole water column at the tip of the Antarctic Peninsula. Conference Object Antarc* Antarctic Antarctic Peninsula Bransfield Strait Ice Shelves Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic Antarctic Peninsula Weddell Sea Austral Bransfield Strait Weddell |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
For the last five decades the Antarctic Peninsula faces the strongest atmospheric warming on Earth with consequences for its glaciers and ice shelves. With more data available it becomes obvious that the fringing ocean also experiences changes which, however, might result from the natural variability of the system. The comparison of hydrographic data from the northwestern Weddell Sea continental shelf covering the austral summers and winters of the past 20 years reveals a distinct front in summer which separates water masses near surface freezing to the south from those warmer and saltier (with the exception of a ~50-m thick bottom layer) to the north. The latter seem to originate from Bransfield Strait, and its southward extension (~64 oS in 2007) towards existing ice shelves might differ from year to year. In winter, these warm waters are replaced by cold shelf water with salinities corresponding to the salty summer bottom layer on the southern continental shelf. The comparison of the two winter cruises in 1989 and 2006 reveals a significant freshening (~0.1) of the whole water column at the tip of the Antarctic Peninsula. |
format |
Conference Object |
author |
Hellmer, Hartmut Schröder, Michael Isla, E. |
spellingShingle |
Hellmer, Hartmut Schröder, Michael Isla, E. Seasonal variability on the northwestern Weddell Sea continental shelf |
author_facet |
Hellmer, Hartmut Schröder, Michael Isla, E. |
author_sort |
Hellmer, Hartmut |
title |
Seasonal variability on the northwestern Weddell Sea continental shelf |
title_short |
Seasonal variability on the northwestern Weddell Sea continental shelf |
title_full |
Seasonal variability on the northwestern Weddell Sea continental shelf |
title_fullStr |
Seasonal variability on the northwestern Weddell Sea continental shelf |
title_full_unstemmed |
Seasonal variability on the northwestern Weddell Sea continental shelf |
title_sort |
seasonal variability on the northwestern weddell sea continental shelf |
publishDate |
2009 |
url |
https://epic.awi.de/id/eprint/20240/ https://hdl.handle.net/10013/epic.32136 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Austral Bransfield Strait Weddell |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Austral Bransfield Strait Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Bransfield Strait Ice Shelves Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bransfield Strait Ice Shelves Weddell Sea |
op_source |
EPIC3EGU General Assembly (OS10), Vienna, Austria. |
op_relation |
Hellmer, H. orcid:0000-0002-9357-9853 , Schröder, M. and Isla, E. (2009) Seasonal variability on the northwestern Weddell Sea continental shelf , EGU General Assembly (OS10), Vienna, Austria. . hdl:10013/epic.32136 |
_version_ |
1766124784874160128 |