Surface circulation and fronts of the South Pacific Ocean, east of 120°W
International audience The South Pacific surface circulation east of 120°W is studied, using satellite tracked drifters from 1979-2004. The major currents of this region are described such as the Antarctic Circumpolar, the South Pacific, the Chile-Peru and the Cape Horn Currents. We suggest the pres...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1029/2004GL022070 https://hal.archives-ouvertes.fr/hal-00123740/file/2004GL022070.pdf https://hal.archives-ouvertes.fr/hal-00123740 |
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fttriple:oai:gotriple.eu:10670/1.8qijli 2023-05-15T13:56:54+02:00 Surface circulation and fronts of the South Pacific Ocean, east of 120°W Chaigneau, Alexis Pizarro, Oscar Echanges Côte-Large (ECOLA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Departamento de Geofísica,Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental/Programa Regional de Oceanografía Física y Clima (DGEO) Universidad de Concepción Chile 2005-01-01 https://doi.org/10.1029/2004GL022070 https://hal.archives-ouvertes.fr/hal-00123740/file/2004GL022070.pdf https://hal.archives-ouvertes.fr/hal-00123740 en eng HAL CCSD American Geophysical Union hal-00123740 doi:10.1029/2004GL022070 IRD: fdi:010047303 10670/1.8qijli https://hal.archives-ouvertes.fr/hal-00123740/file/2004GL022070.pdf https://hal.archives-ouvertes.fr/hal-00123740 other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research Journal of Geophysical Research, American Geophysical Union, 2005, 32, pp.L08605. ⟨10.1029/2004GL022070⟩ geo hist Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2005 fttriple https://doi.org/10.1029/2004GL022070 2023-01-22T18:19:58Z International audience The South Pacific surface circulation east of 120°W is studied, using satellite tracked drifters from 1979-2004. The major currents of this region are described such as the Antarctic Circumpolar, the South Pacific, the Chile-Peru and the Cape Horn Currents. We suggest the presence of a branch, exiting from the ACC between 100-120°W, and transporting subantarctic surface water toward lower latitudes. We also show the existence of an anticyclonic recirculation cell north of 35°S. Finally, based on hydrographic sections, we show that in the eastern South Pacific the core of the Subtropical front corresponds to the 14°C isotherm at 150 m depths and to the 2.7 m of dynamic height relative to 3000 m. The Subantarctic front is located by maximum temperature gradients in the range 3-8°C at 100-400 m depth. Article in Journal/Newspaper Antarc* Antarctic Unknown Antarctic Cape Horn ENVELOPE(-135.021,-135.021,61.583,61.583) Pacific The Antarctic Geophysical Research Letters 32 8 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo hist |
spellingShingle |
geo hist Chaigneau, Alexis Pizarro, Oscar Surface circulation and fronts of the South Pacific Ocean, east of 120°W |
topic_facet |
geo hist |
description |
International audience The South Pacific surface circulation east of 120°W is studied, using satellite tracked drifters from 1979-2004. The major currents of this region are described such as the Antarctic Circumpolar, the South Pacific, the Chile-Peru and the Cape Horn Currents. We suggest the presence of a branch, exiting from the ACC between 100-120°W, and transporting subantarctic surface water toward lower latitudes. We also show the existence of an anticyclonic recirculation cell north of 35°S. Finally, based on hydrographic sections, we show that in the eastern South Pacific the core of the Subtropical front corresponds to the 14°C isotherm at 150 m depths and to the 2.7 m of dynamic height relative to 3000 m. The Subantarctic front is located by maximum temperature gradients in the range 3-8°C at 100-400 m depth. |
author2 |
Echanges Côte-Large (ECOLA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Departamento de Geofísica,Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental/Programa Regional de Oceanografía Física y Clima (DGEO) Universidad de Concepción Chile |
format |
Article in Journal/Newspaper |
author |
Chaigneau, Alexis Pizarro, Oscar |
author_facet |
Chaigneau, Alexis Pizarro, Oscar |
author_sort |
Chaigneau, Alexis |
title |
Surface circulation and fronts of the South Pacific Ocean, east of 120°W |
title_short |
Surface circulation and fronts of the South Pacific Ocean, east of 120°W |
title_full |
Surface circulation and fronts of the South Pacific Ocean, east of 120°W |
title_fullStr |
Surface circulation and fronts of the South Pacific Ocean, east of 120°W |
title_full_unstemmed |
Surface circulation and fronts of the South Pacific Ocean, east of 120°W |
title_sort |
surface circulation and fronts of the south pacific ocean, east of 120°w |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://doi.org/10.1029/2004GL022070 https://hal.archives-ouvertes.fr/hal-00123740/file/2004GL022070.pdf https://hal.archives-ouvertes.fr/hal-00123740 |
long_lat |
ENVELOPE(-135.021,-135.021,61.583,61.583) |
geographic |
Antarctic Cape Horn Pacific The Antarctic |
geographic_facet |
Antarctic Cape Horn Pacific The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research Journal of Geophysical Research, American Geophysical Union, 2005, 32, pp.L08605. ⟨10.1029/2004GL022070⟩ |
op_relation |
hal-00123740 doi:10.1029/2004GL022070 IRD: fdi:010047303 10670/1.8qijli https://hal.archives-ouvertes.fr/hal-00123740/file/2004GL022070.pdf https://hal.archives-ouvertes.fr/hal-00123740 |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2004GL022070 |
container_title |
Geophysical Research Letters |
container_volume |
32 |
container_issue |
8 |
_version_ |
1766264485102747648 |