The baroclinic transport of the Antarctic Circumpolar Current south of Africa
Five hydrographic transects at nominal longitudes 0 degrees E and 30 degrees E, and fourteen expendable bathythermograph (XBT) sections near the former longitude are used to study the baroclinic transport of the Antarctic Circumpolar Current (ACC) between Africa and Antarctica. The bottom-referenced...
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Online Access: | https://archimer.ifremer.fr/doc/2005/publication-933.pdf https://doi.org/10.1029/2005GL023271 https://archimer.ifremer.fr/doc/00000/933/ |
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ftarchimer:oai:archimer.ifremer.fr:933 2023-05-15T14:04:56+02:00 The baroclinic transport of the Antarctic Circumpolar Current south of Africa Legeais, Jean-francois Speich, Sabrina Arhan, Michel Ansorge, I Fahrbach, E Garzoli, S Klepikov, A 2005-12 application/pdf https://archimer.ifremer.fr/doc/2005/publication-933.pdf https://doi.org/10.1029/2005GL023271 https://archimer.ifremer.fr/doc/00000/933/ eng eng AGU https://archimer.ifremer.fr/doc/2005/publication-933.pdf doi:10.1029/2005GL023271 https://archimer.ifremer.fr/doc/00000/933/ 2005 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use Geophysical Research Letters (0094-8276) (AGU), 2005-12 , Vol. 32 , N. 24/L24602 , P. 1-5 Water masses Geostrophic current Antarctic circumpolar Current Baroclinic transport text Publication info:eu-repo/semantics/article 2005 ftarchimer https://doi.org/10.1029/2005GL023271 2021-09-23T20:13:28Z Five hydrographic transects at nominal longitudes 0 degrees E and 30 degrees E, and fourteen expendable bathythermograph (XBT) sections near the former longitude are used to study the baroclinic transport of the Antarctic Circumpolar Current (ACC) between Africa and Antarctica. The bottom-referenced geostrophic transport between the Subtropical Front and the ACC Southern Boundary is 147 +/- 10 Sv. Estimating the transport from the XBTs using a technique previously employed south of Australia proves delicate because of an irregular bathymetry and water mass variations. It nevertheless confirms ACC transports around 150 Sv. Gathering these and other estimates from the Atlantic sector suggests that, while North Atlantic Deep Water is injected in the current west of 35 degrees W, a partially compensating loss of Deep Circumpolar Water occurs east of this longitude. Another transport increase from 0 degrees E to 30 degrees E might reflect southward transfer across the Subtropical Front south of the Agulhas retroflection. Article in Journal/Newspaper Antarc* Antarctic Antarctica North Atlantic Deep Water North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic The Antarctic Geophysical Research Letters 32 24 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Water masses Geostrophic current Antarctic circumpolar Current Baroclinic transport |
spellingShingle |
Water masses Geostrophic current Antarctic circumpolar Current Baroclinic transport Legeais, Jean-francois Speich, Sabrina Arhan, Michel Ansorge, I Fahrbach, E Garzoli, S Klepikov, A The baroclinic transport of the Antarctic Circumpolar Current south of Africa |
topic_facet |
Water masses Geostrophic current Antarctic circumpolar Current Baroclinic transport |
description |
Five hydrographic transects at nominal longitudes 0 degrees E and 30 degrees E, and fourteen expendable bathythermograph (XBT) sections near the former longitude are used to study the baroclinic transport of the Antarctic Circumpolar Current (ACC) between Africa and Antarctica. The bottom-referenced geostrophic transport between the Subtropical Front and the ACC Southern Boundary is 147 +/- 10 Sv. Estimating the transport from the XBTs using a technique previously employed south of Australia proves delicate because of an irregular bathymetry and water mass variations. It nevertheless confirms ACC transports around 150 Sv. Gathering these and other estimates from the Atlantic sector suggests that, while North Atlantic Deep Water is injected in the current west of 35 degrees W, a partially compensating loss of Deep Circumpolar Water occurs east of this longitude. Another transport increase from 0 degrees E to 30 degrees E might reflect southward transfer across the Subtropical Front south of the Agulhas retroflection. |
format |
Article in Journal/Newspaper |
author |
Legeais, Jean-francois Speich, Sabrina Arhan, Michel Ansorge, I Fahrbach, E Garzoli, S Klepikov, A |
author_facet |
Legeais, Jean-francois Speich, Sabrina Arhan, Michel Ansorge, I Fahrbach, E Garzoli, S Klepikov, A |
author_sort |
Legeais, Jean-francois |
title |
The baroclinic transport of the Antarctic Circumpolar Current south of Africa |
title_short |
The baroclinic transport of the Antarctic Circumpolar Current south of Africa |
title_full |
The baroclinic transport of the Antarctic Circumpolar Current south of Africa |
title_fullStr |
The baroclinic transport of the Antarctic Circumpolar Current south of Africa |
title_full_unstemmed |
The baroclinic transport of the Antarctic Circumpolar Current south of Africa |
title_sort |
baroclinic transport of the antarctic circumpolar current south of africa |
publisher |
AGU |
publishDate |
2005 |
url |
https://archimer.ifremer.fr/doc/2005/publication-933.pdf https://doi.org/10.1029/2005GL023271 https://archimer.ifremer.fr/doc/00000/933/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic Antarctica North Atlantic Deep Water North Atlantic |
op_source |
Geophysical Research Letters (0094-8276) (AGU), 2005-12 , Vol. 32 , N. 24/L24602 , P. 1-5 |
op_relation |
https://archimer.ifremer.fr/doc/2005/publication-933.pdf doi:10.1029/2005GL023271 https://archimer.ifremer.fr/doc/00000/933/ |
op_rights |
2005 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2005GL023271 |
container_title |
Geophysical Research Letters |
container_volume |
32 |
container_issue |
24 |
_version_ |
1766276387833905152 |