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...
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Online Access: | https://hal.science/hal-00123740 https://hal.science/hal-00123740/document https://hal.science/hal-00123740/file/2004GL022070.pdf https://doi.org/10.1029/2004GL022070 |
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ftinsu:oai:HAL:hal-00123740v1 2023-12-17T10:21:26+01:00 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 de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-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 - University of Concepcion Chile 2005 https://hal.science/hal-00123740 https://hal.science/hal-00123740/document https://hal.science/hal-00123740/file/2004GL022070.pdf https://doi.org/10.1029/2004GL022070 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2004GL022070 hal-00123740 https://hal.science/hal-00123740 https://hal.science/hal-00123740/document https://hal.science/hal-00123740/file/2004GL022070.pdf doi:10.1029/2004GL022070 IRD: fdi:010047303 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00123740 Journal of Geophysical Research, 2005, 32, pp.L08605. ⟨10.1029/2004GL022070⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2005 ftinsu https://doi.org/10.1029/2004GL022070 2023-11-22T17:37:46Z 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 Institut national des sciences de l'Univers: HAL-INSU Antarctic The Antarctic Pacific Cape Horn ENVELOPE(-135.021,-135.021,61.583,61.583) Geophysical Research Letters 32 8 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes Chaigneau, Alexis Pizarro, Oscar Surface circulation and fronts of the South Pacific Ocean, east of 120°W |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
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 de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-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 - University of Concepcion 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://hal.science/hal-00123740 https://hal.science/hal-00123740/document https://hal.science/hal-00123740/file/2004GL022070.pdf https://doi.org/10.1029/2004GL022070 |
long_lat |
ENVELOPE(-135.021,-135.021,61.583,61.583) |
geographic |
Antarctic The Antarctic Pacific Cape Horn |
geographic_facet |
Antarctic The Antarctic Pacific Cape Horn |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00123740 Journal of Geophysical Research, 2005, 32, pp.L08605. ⟨10.1029/2004GL022070⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2004GL022070 hal-00123740 https://hal.science/hal-00123740 https://hal.science/hal-00123740/document https://hal.science/hal-00123740/file/2004GL022070.pdf doi:10.1029/2004GL022070 IRD: fdi:010047303 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2004GL022070 |
container_title |
Geophysical Research Letters |
container_volume |
32 |
container_issue |
8 |
_version_ |
1785534470962544640 |