Winter mesoscale circulation on the shelf slope region of the southern Drake Passage
Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part II: Topical Studies in Oceanography 90 (2013): 4-14, doi:10....
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/6133 2023-05-15T13:53:14+02:00 Winter mesoscale circulation on the shelf slope region of the southern Drake Passage Zhou, Meng Zhu, Yiwu Measures, Christopher I. Hatta, Mariko Charette, Matthew A. Gille, Sarah T. Frants, Marina Jiang, Mingshun Mitchell, B. Gregory 2013-02-20 application/pdf https://hdl.handle.net/1912/6133 en_US eng https://doi.org/10.1016/j.dsr2.2013.03.041 https://hdl.handle.net/1912/6133 Southern Ocean Drake Passage Antarctic Circumpolar Current Shelf waters Mesoscale eddies Mixing Iron transport Preprint 2013 ftwhoas https://doi.org/10.1016/j.dsr2.2013.03.041 2022-05-28T22:58:54Z Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part II: Topical Studies in Oceanography 90 (2013): 4-14, doi:10.1016/j.dsr2.2013.03.041. An austral winter cruise in July-August 2006 was conducted to study the winter circulation and iron delivery processes in the Southern Drake Passage and Bransfield Strait. Results from current and hydrographic measurements revealed a circulation pattern similar to that of the austral summer season observed in previous studies: The Shackleton Transverse Ridge (STR) in the southern Drake Passage blocks a part of the eastward Antarctic Circumpolar Current (ACC) which forces the ACC to detour southward, produces a Taylor Column over the STR, and forms an ACC jet within the Shackleton Gap, a deep channel between the STR and the shelf of Elephant Island. Observations show that to the west of the STR, the Upper Circumpolar Deep Water (UCDW) intruded onto the shelf around the South Shetland Islands while to the east of the STR, shelf waters were transported off the northern shelf of Elephant Island. Along a similar west-east transect approximately 50 km off the shelf, the northward transport of shelf waters was approximately 2.4 and 1.2 Sv in the austral winter and summer, respectively. The waters around Elephant Island primarily consist of the UCDW that has been modified by local cooling and freshening, unmodified UCDW that has recently intruded onto the shelf, and Bransfield Current water that is a mixture of shelf and Bransfield Strait waters. Weddell Sea outflows were observed which affect the hydrography and circulation in the Bransfield Strait and indirectly affect the circulation patterns in the southern Drake Passage and around Elephant Island. Two Fe enrichment and transport mechanisms are proposed that intrusions of the UCDW onto the northern shelf region of the South Shetland Islands is ... Report Antarc* Antarctic Bransfield Strait Drake Passage Elephant Island South Shetland Islands Southern Ocean Weddell Sea Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Antarctic Austral Bransfield Strait Detour ENVELOPE(-63.913,-63.913,-65.021,-65.021) Drake Passage Elephant Island ENVELOPE(-55.184,-55.184,-61.085,-61.085) Shackleton Shackleton Gap ENVELOPE(-37.200,-37.200,-54.133,-54.133) South Shetland Islands Southern Ocean Weddell Weddell Sea Deep Sea Research Part II: Topical Studies in Oceanography 90 4 14 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Southern Ocean Drake Passage Antarctic Circumpolar Current Shelf waters Mesoscale eddies Mixing Iron transport |
spellingShingle |
Southern Ocean Drake Passage Antarctic Circumpolar Current Shelf waters Mesoscale eddies Mixing Iron transport Zhou, Meng Zhu, Yiwu Measures, Christopher I. Hatta, Mariko Charette, Matthew A. Gille, Sarah T. Frants, Marina Jiang, Mingshun Mitchell, B. Gregory Winter mesoscale circulation on the shelf slope region of the southern Drake Passage |
topic_facet |
Southern Ocean Drake Passage Antarctic Circumpolar Current Shelf waters Mesoscale eddies Mixing Iron transport |
description |
Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part II: Topical Studies in Oceanography 90 (2013): 4-14, doi:10.1016/j.dsr2.2013.03.041. An austral winter cruise in July-August 2006 was conducted to study the winter circulation and iron delivery processes in the Southern Drake Passage and Bransfield Strait. Results from current and hydrographic measurements revealed a circulation pattern similar to that of the austral summer season observed in previous studies: The Shackleton Transverse Ridge (STR) in the southern Drake Passage blocks a part of the eastward Antarctic Circumpolar Current (ACC) which forces the ACC to detour southward, produces a Taylor Column over the STR, and forms an ACC jet within the Shackleton Gap, a deep channel between the STR and the shelf of Elephant Island. Observations show that to the west of the STR, the Upper Circumpolar Deep Water (UCDW) intruded onto the shelf around the South Shetland Islands while to the east of the STR, shelf waters were transported off the northern shelf of Elephant Island. Along a similar west-east transect approximately 50 km off the shelf, the northward transport of shelf waters was approximately 2.4 and 1.2 Sv in the austral winter and summer, respectively. The waters around Elephant Island primarily consist of the UCDW that has been modified by local cooling and freshening, unmodified UCDW that has recently intruded onto the shelf, and Bransfield Current water that is a mixture of shelf and Bransfield Strait waters. Weddell Sea outflows were observed which affect the hydrography and circulation in the Bransfield Strait and indirectly affect the circulation patterns in the southern Drake Passage and around Elephant Island. Two Fe enrichment and transport mechanisms are proposed that intrusions of the UCDW onto the northern shelf region of the South Shetland Islands is ... |
format |
Report |
author |
Zhou, Meng Zhu, Yiwu Measures, Christopher I. Hatta, Mariko Charette, Matthew A. Gille, Sarah T. Frants, Marina Jiang, Mingshun Mitchell, B. Gregory |
author_facet |
Zhou, Meng Zhu, Yiwu Measures, Christopher I. Hatta, Mariko Charette, Matthew A. Gille, Sarah T. Frants, Marina Jiang, Mingshun Mitchell, B. Gregory |
author_sort |
Zhou, Meng |
title |
Winter mesoscale circulation on the shelf slope region of the southern Drake Passage |
title_short |
Winter mesoscale circulation on the shelf slope region of the southern Drake Passage |
title_full |
Winter mesoscale circulation on the shelf slope region of the southern Drake Passage |
title_fullStr |
Winter mesoscale circulation on the shelf slope region of the southern Drake Passage |
title_full_unstemmed |
Winter mesoscale circulation on the shelf slope region of the southern Drake Passage |
title_sort |
winter mesoscale circulation on the shelf slope region of the southern drake passage |
publishDate |
2013 |
url |
https://hdl.handle.net/1912/6133 |
long_lat |
ENVELOPE(-63.913,-63.913,-65.021,-65.021) ENVELOPE(-55.184,-55.184,-61.085,-61.085) ENVELOPE(-37.200,-37.200,-54.133,-54.133) |
geographic |
Antarctic Austral Bransfield Strait Detour Drake Passage Elephant Island Shackleton Shackleton Gap South Shetland Islands Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Austral Bransfield Strait Detour Drake Passage Elephant Island Shackleton Shackleton Gap South Shetland Islands Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Bransfield Strait Drake Passage Elephant Island South Shetland Islands Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Bransfield Strait Drake Passage Elephant Island South Shetland Islands Southern Ocean Weddell Sea |
op_relation |
https://doi.org/10.1016/j.dsr2.2013.03.041 https://hdl.handle.net/1912/6133 |
op_doi |
https://doi.org/10.1016/j.dsr2.2013.03.041 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
90 |
container_start_page |
4 |
op_container_end_page |
14 |
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1766258246013681664 |