The Effect of the Kerguelen Plateau on the Ocean Circulation
AbstractThe Kerguelen Plateau is a major topographic feature in the Southern Ocean. Located in the Indian sector and spanning nearly 2000 km in the meridional direction from the polar to the subantarctic region, it deflects the eastward-flowing Antarctic Circumpolar Current and influences the physic...
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ftcdlib:oai:escholarship.org/ark:/13030/qt7sj4p0d3 2023-05-15T13:33:01+02:00 The Effect of the Kerguelen Plateau on the Ocean Circulation Wang, Jinbo Mazloff, Matthew R Gille, Sarah T 3385 - 3396 2016-11-01 application/pdf https://escholarship.org/uc/item/7sj4p0d3 unknown eScholarship, University of California qt7sj4p0d3 https://escholarship.org/uc/item/7sj4p0d3 public JOURNAL OF PHYSICAL OCEANOGRAPHY, vol 46, iss 11 Oceanography Maritime Engineering article 2016 ftcdlib 2021-02-18T15:14:38Z AbstractThe Kerguelen Plateau is a major topographic feature in the Southern Ocean. Located in the Indian sector and spanning nearly 2000 km in the meridional direction from the polar to the subantarctic region, it deflects the eastward-flowing Antarctic Circumpolar Current and influences the physical circulation and biogeochemistry of the Southern Ocean. The Kerguelen Plateau is known to govern the local dynamics, but its impact on the large-scale ocean circulation has not been explored. By comparing global ocean numerical simulations with and without the Kerguelen Plateau, this study identifies two major Kerguelen Plateau effects: 1) The plateau supports a local pressure field that pushes the Antarctic Circumpolar Current northward. This process reduces the warm-water transport from the Indian to the Atlantic Ocean. 2) The plateau-generated pressure field shields the Weddell Gyre from the influence of the warmer subantarctic and subtropical waters. The first effect influences the strength of the Antarctic Circumpolar Current and the Agulhas leakage, both of which are important elements in the global thermohaline circulation. The second effect results in a zonally asymmetric response of the subpolar gyres to Southern Hemisphere wind forcing. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean University of California: eScholarship Antarctic Indian Kerguelen Southern Ocean The Antarctic Weddell |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Oceanography Maritime Engineering |
spellingShingle |
Oceanography Maritime Engineering Wang, Jinbo Mazloff, Matthew R Gille, Sarah T The Effect of the Kerguelen Plateau on the Ocean Circulation |
topic_facet |
Oceanography Maritime Engineering |
description |
AbstractThe Kerguelen Plateau is a major topographic feature in the Southern Ocean. Located in the Indian sector and spanning nearly 2000 km in the meridional direction from the polar to the subantarctic region, it deflects the eastward-flowing Antarctic Circumpolar Current and influences the physical circulation and biogeochemistry of the Southern Ocean. The Kerguelen Plateau is known to govern the local dynamics, but its impact on the large-scale ocean circulation has not been explored. By comparing global ocean numerical simulations with and without the Kerguelen Plateau, this study identifies two major Kerguelen Plateau effects: 1) The plateau supports a local pressure field that pushes the Antarctic Circumpolar Current northward. This process reduces the warm-water transport from the Indian to the Atlantic Ocean. 2) The plateau-generated pressure field shields the Weddell Gyre from the influence of the warmer subantarctic and subtropical waters. The first effect influences the strength of the Antarctic Circumpolar Current and the Agulhas leakage, both of which are important elements in the global thermohaline circulation. The second effect results in a zonally asymmetric response of the subpolar gyres to Southern Hemisphere wind forcing. |
format |
Article in Journal/Newspaper |
author |
Wang, Jinbo Mazloff, Matthew R Gille, Sarah T |
author_facet |
Wang, Jinbo Mazloff, Matthew R Gille, Sarah T |
author_sort |
Wang, Jinbo |
title |
The Effect of the Kerguelen Plateau on the Ocean Circulation |
title_short |
The Effect of the Kerguelen Plateau on the Ocean Circulation |
title_full |
The Effect of the Kerguelen Plateau on the Ocean Circulation |
title_fullStr |
The Effect of the Kerguelen Plateau on the Ocean Circulation |
title_full_unstemmed |
The Effect of the Kerguelen Plateau on the Ocean Circulation |
title_sort |
effect of the kerguelen plateau on the ocean circulation |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/7sj4p0d3 |
op_coverage |
3385 - 3396 |
geographic |
Antarctic Indian Kerguelen Southern Ocean The Antarctic Weddell |
geographic_facet |
Antarctic Indian Kerguelen Southern Ocean The Antarctic Weddell |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
JOURNAL OF PHYSICAL OCEANOGRAPHY, vol 46, iss 11 |
op_relation |
qt7sj4p0d3 https://escholarship.org/uc/item/7sj4p0d3 |
op_rights |
public |
_version_ |
1766037850843774976 |