Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelf

Five thermistor moorings were placed on the continental shelf of the western Antarctic Peninsula (between 2007 and 2010) in an effort to identify the mechanism(s) responsible for delivering warm Upper Circumpolar Deep Water (UCDW) onto the broad continental shelf from the Antarctic Circumpolar Curre...

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Main Authors: D. G. Martinson, D. C. McKee
Format: Article
Language:English
Published: Copernicus Publications 2012-07-01
Series:Ocean Science
Online Access:http://www.ocean-sci.net/8/433/2012/os-8-433-2012.pdf
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spelling doaj-8996dec277704716862117fde95a925f2020-11-25T01:37:58ZengCopernicus PublicationsOcean Science1812-07841812-07922012-07-018443344210.5194/os-8-433-2012Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelfD. G. MartinsonD. C. McKeeFive thermistor moorings were placed on the continental shelf of the western Antarctic Peninsula (between 2007 and 2010) in an effort to identify the mechanism(s) responsible for delivering warm Upper Circumpolar Deep Water (UCDW) onto the broad continental shelf from the Antarctic Circumpolar Current (ACC) flowing over the adjacent continental slope. Historically, four mechanisms have been suggested: (1) eddies shed from the ACC, (2) flow into the cross-shelf-cutting canyons with overflow onto the nominal shelf, (3) general upwelling, and (4) episodic advective diversions of the ACC onto the shelf. The mooring array showed that for the years of deployment, the dominant mechanism is eddies; upwelling may also contribute but to an unknown extent. Mechanism 2 played no role, though the canyons have been shown previously to channel UCDW across the shelf into Marguerite Bay. Mechanism 4 played no role independently, though eddies may be advected within a greater intrusion of the background flow.http://www.ocean-sci.net/8/433/2012/os-8-433-2012.pdf
collection DOAJ
language English
format Article
sources DOAJ
author D. G. Martinson
D. C. McKee
spellingShingle D. G. Martinson
D. C. McKee
Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelf
Ocean Science
author_facet D. G. Martinson
D. C. McKee
author_sort D. G. Martinson
title Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelf
title_short Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelf
title_full Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelf
title_fullStr Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelf
title_full_unstemmed Transport of warm Upper Circumpolar Deep Water onto the western Antarctic Peninsula continental shelf
title_sort transport of warm upper circumpolar deep water onto the western antarctic peninsula continental shelf
publisher Copernicus Publications
series Ocean Science
issn 1812-0784
1812-0792
publishDate 2012-07-01
description Five thermistor moorings were placed on the continental shelf of the western Antarctic Peninsula (between 2007 and 2010) in an effort to identify the mechanism(s) responsible for delivering warm Upper Circumpolar Deep Water (UCDW) onto the broad continental shelf from the Antarctic Circumpolar Current (ACC) flowing over the adjacent continental slope. Historically, four mechanisms have been suggested: (1) eddies shed from the ACC, (2) flow into the cross-shelf-cutting canyons with overflow onto the nominal shelf, (3) general upwelling, and (4) episodic advective diversions of the ACC onto the shelf. The mooring array showed that for the years of deployment, the dominant mechanism is eddies; upwelling may also contribute but to an unknown extent. Mechanism 2 played no role, though the canyons have been shown previously to channel UCDW across the shelf into Marguerite Bay. Mechanism 4 played no role independently, though eddies may be advected within a greater intrusion of the background flow.
url http://www.ocean-sci.net/8/433/2012/os-8-433-2012.pdf
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