The Antarctic Coastal Current in the Bellingshausen Sea
The ice shelves of the West Antarctic Ice Sheet experience basal melting induced by underlying warm, salty Circumpolar Deep Water. Basal meltwater, along with runoff from ice sheets, supplies fresh buoyant water to a circulation feature near the coast, the Antarctic Coastal Current (AACC). The forma...
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Copernicus Publications
2021
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Online Access: | https://doi.org/10.5194/tc-15-4179-2021 https://tc.copernicus.org/articles/15/4179/2021/tc-15-4179-2021.pdf https://doaj.org/article/68137d6b9ab84cbca7feec6256394e04 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:68137d6b9ab84cbca7feec6256394e04 2023-05-15T12:58:36+02:00 The Antarctic Coastal Current in the Bellingshausen Sea R. Schubert A. F. Thompson K. Speer L. Schulze Chretien Y. Bebieva 2021-09-01 https://doi.org/10.5194/tc-15-4179-2021 https://tc.copernicus.org/articles/15/4179/2021/tc-15-4179-2021.pdf https://doaj.org/article/68137d6b9ab84cbca7feec6256394e04 en eng Copernicus Publications doi:10.5194/tc-15-4179-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/4179/2021/tc-15-4179-2021.pdf https://doaj.org/article/68137d6b9ab84cbca7feec6256394e04 undefined The Cryosphere, Vol 15, Pp 4179-4199 (2021) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/tc-15-4179-2021 2023-01-22T17:49:37Z The ice shelves of the West Antarctic Ice Sheet experience basal melting induced by underlying warm, salty Circumpolar Deep Water. Basal meltwater, along with runoff from ice sheets, supplies fresh buoyant water to a circulation feature near the coast, the Antarctic Coastal Current (AACC). The formation, structure, and coherence of the AACC has been well documented along the West Antarctic Peninsula (WAP). Observations from instrumented seals collected in the Bellingshausen Sea offer extensive hydrographic coverage throughout the year, providing evidence of the continuation of the westward flowing AACC from the WAP towards the Amundsen Sea. The observations reported here demonstrate that the coastal boundary current enters the eastern Bellingshausen Sea from the WAP and flows westward along the face of multiple ice shelves, including the westernmost Abbot Ice Shelf. The presence of the AACC in the western Bellingshausen Sea has implications for the export of water properties into the eastern Amundsen Sea, which we suggest may occur through multiple pathways, either along the coast or along the continental shelf break. The temperature, salinity, and density structure of the current indicates an increase in baroclinic transport as the AACC flows from the east to the west, and as it entrains meltwater from the ice shelves in the Bellingshausen Sea. The AACC acts as a mechanism to transport meltwater out of the Bellingshausen Sea and into the Amundsen and Ross seas, with the potential to impact, respectively, basal melt rates and bottom water formation in these regions. Article in Journal/Newspaper Abbot Ice Shelf Amundsen Sea Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ice Sheet Ice Shelf Ice Shelves The Cryosphere Unknown Abbot Ice Shelf ENVELOPE(-96.000,-96.000,-72.750,-72.750) Amundsen Sea Antarctic Antarctic Peninsula Bellingshausen Sea The Antarctic West Antarctic Ice Sheet The Cryosphere 15 9 4179 4199 |
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Open Polar |
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Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir R. Schubert A. F. Thompson K. Speer L. Schulze Chretien Y. Bebieva The Antarctic Coastal Current in the Bellingshausen Sea |
topic_facet |
geo envir |
description |
The ice shelves of the West Antarctic Ice Sheet experience basal melting induced by underlying warm, salty Circumpolar Deep Water. Basal meltwater, along with runoff from ice sheets, supplies fresh buoyant water to a circulation feature near the coast, the Antarctic Coastal Current (AACC). The formation, structure, and coherence of the AACC has been well documented along the West Antarctic Peninsula (WAP). Observations from instrumented seals collected in the Bellingshausen Sea offer extensive hydrographic coverage throughout the year, providing evidence of the continuation of the westward flowing AACC from the WAP towards the Amundsen Sea. The observations reported here demonstrate that the coastal boundary current enters the eastern Bellingshausen Sea from the WAP and flows westward along the face of multiple ice shelves, including the westernmost Abbot Ice Shelf. The presence of the AACC in the western Bellingshausen Sea has implications for the export of water properties into the eastern Amundsen Sea, which we suggest may occur through multiple pathways, either along the coast or along the continental shelf break. The temperature, salinity, and density structure of the current indicates an increase in baroclinic transport as the AACC flows from the east to the west, and as it entrains meltwater from the ice shelves in the Bellingshausen Sea. The AACC acts as a mechanism to transport meltwater out of the Bellingshausen Sea and into the Amundsen and Ross seas, with the potential to impact, respectively, basal melt rates and bottom water formation in these regions. |
format |
Article in Journal/Newspaper |
author |
R. Schubert A. F. Thompson K. Speer L. Schulze Chretien Y. Bebieva |
author_facet |
R. Schubert A. F. Thompson K. Speer L. Schulze Chretien Y. Bebieva |
author_sort |
R. Schubert |
title |
The Antarctic Coastal Current in the Bellingshausen Sea |
title_short |
The Antarctic Coastal Current in the Bellingshausen Sea |
title_full |
The Antarctic Coastal Current in the Bellingshausen Sea |
title_fullStr |
The Antarctic Coastal Current in the Bellingshausen Sea |
title_full_unstemmed |
The Antarctic Coastal Current in the Bellingshausen Sea |
title_sort |
antarctic coastal current in the bellingshausen sea |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-4179-2021 https://tc.copernicus.org/articles/15/4179/2021/tc-15-4179-2021.pdf https://doaj.org/article/68137d6b9ab84cbca7feec6256394e04 |
long_lat |
ENVELOPE(-96.000,-96.000,-72.750,-72.750) |
geographic |
Abbot Ice Shelf Amundsen Sea Antarctic Antarctic Peninsula Bellingshausen Sea The Antarctic West Antarctic Ice Sheet |
geographic_facet |
Abbot Ice Shelf Amundsen Sea Antarctic Antarctic Peninsula Bellingshausen Sea The Antarctic West Antarctic Ice Sheet |
genre |
Abbot Ice Shelf Amundsen Sea Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ice Sheet Ice Shelf Ice Shelves The Cryosphere |
genre_facet |
Abbot Ice Shelf Amundsen Sea Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Ice Sheet Ice Shelf Ice Shelves The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 4179-4199 (2021) |
op_relation |
doi:10.5194/tc-15-4179-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/4179/2021/tc-15-4179-2021.pdf https://doaj.org/article/68137d6b9ab84cbca7feec6256394e04 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-15-4179-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
9 |
container_start_page |
4179 |
op_container_end_page |
4199 |
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1766363932729016320 |