Deep boundary current disintegration in Drake Passage
Abstract The fate of a deep boundary current that originates in the Southeast Pacific and flows southward along the continental slope of South America is elucidated. The current transports poorly ventilated water of low salinity (a type of Pacific Deep Water, PDW), into Drake Passage. East of Drake...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.655.2478 2023-05-15T14:02:59+02:00 Deep boundary current disintegration in Drake Passage J. Alex Er Brearley Katy L. Sheen Alberto C. Naveira Garabato David A. Smeed Kevin G. Speer Andreas M. Thurnherr Michael P. Meredith Stephanie Waterman The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.655.2478 http://eprints.soton.ac.uk/354488/1/grl51239_Brearley.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.655.2478 http://eprints.soton.ac.uk/354488/1/grl51239_Brearley.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://eprints.soton.ac.uk/354488/1/grl51239_Brearley.pdf text ftciteseerx 2016-01-08T16:34:48Z Abstract The fate of a deep boundary current that originates in the Southeast Pacific and flows southward along the continental slope of South America is elucidated. The current transports poorly ventilated water of low salinity (a type of Pacific Deep Water, PDW), into Drake Passage. East of Drake Passage, the boundary current breaks into fresh anticyclonic eddies, nine examples of which were observed in mooring data from December 2009 to March 2012. The observed eddies appear to originate mainly from a topographic separation point close to 60°W, have typical diameters of 20–60 km and accompanying Rossby numbers of 0.1–0.3. These features are likely to be responsible for transporting PDW meridionally across the Antarctic Circumpolar Current, explaining the near homogenization of Circumpolar Deep Water properties downstream of Drake Passage. This mechanism of boundary current breakdownmay constitute an important process in the Southern Ocean overturning circulation. 1. Text Antarc* Antarctic Drake Passage Southern Ocean Unknown Antarctic Drake Passage Pacific Separation Point ENVELOPE(-93.468,-93.468,75.135,75.135) Southern Ocean The Antarctic |
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Unknown |
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ftciteseerx |
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English |
description |
Abstract The fate of a deep boundary current that originates in the Southeast Pacific and flows southward along the continental slope of South America is elucidated. The current transports poorly ventilated water of low salinity (a type of Pacific Deep Water, PDW), into Drake Passage. East of Drake Passage, the boundary current breaks into fresh anticyclonic eddies, nine examples of which were observed in mooring data from December 2009 to March 2012. The observed eddies appear to originate mainly from a topographic separation point close to 60°W, have typical diameters of 20–60 km and accompanying Rossby numbers of 0.1–0.3. These features are likely to be responsible for transporting PDW meridionally across the Antarctic Circumpolar Current, explaining the near homogenization of Circumpolar Deep Water properties downstream of Drake Passage. This mechanism of boundary current breakdownmay constitute an important process in the Southern Ocean overturning circulation. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
J. Alex Er Brearley Katy L. Sheen Alberto C. Naveira Garabato David A. Smeed Kevin G. Speer Andreas M. Thurnherr Michael P. Meredith Stephanie Waterman |
spellingShingle |
J. Alex Er Brearley Katy L. Sheen Alberto C. Naveira Garabato David A. Smeed Kevin G. Speer Andreas M. Thurnherr Michael P. Meredith Stephanie Waterman Deep boundary current disintegration in Drake Passage |
author_facet |
J. Alex Er Brearley Katy L. Sheen Alberto C. Naveira Garabato David A. Smeed Kevin G. Speer Andreas M. Thurnherr Michael P. Meredith Stephanie Waterman |
author_sort |
J. Alex |
title |
Deep boundary current disintegration in Drake Passage |
title_short |
Deep boundary current disintegration in Drake Passage |
title_full |
Deep boundary current disintegration in Drake Passage |
title_fullStr |
Deep boundary current disintegration in Drake Passage |
title_full_unstemmed |
Deep boundary current disintegration in Drake Passage |
title_sort |
deep boundary current disintegration in drake passage |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.655.2478 http://eprints.soton.ac.uk/354488/1/grl51239_Brearley.pdf |
long_lat |
ENVELOPE(-93.468,-93.468,75.135,75.135) |
geographic |
Antarctic Drake Passage Pacific Separation Point Southern Ocean The Antarctic |
geographic_facet |
Antarctic Drake Passage Pacific Separation Point Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Drake Passage Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Southern Ocean |
op_source |
http://eprints.soton.ac.uk/354488/1/grl51239_Brearley.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.655.2478 http://eprints.soton.ac.uk/354488/1/grl51239_Brearley.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766273441770504192 |