Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model
International audience The Patagonian slope hosts a variety of waves. We used a state of the art ocean reanalysis to examine waves at the shelf break and in the core of the Malvinas Current (MC) at periods larger than 10 days. Statistics over 25 years indicated three types of signals: in phase signa...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.science/hal-03015284 https://hal.science/hal-03015284/document https://hal.science/hal-03015284/file/Poli2020JC016549.pdf https://doi.org/10.1029/2020jc016549 |
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ftceafr:oai:HAL:hal-03015284v1 |
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openpolar |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
topographic waves shelf break Malvinas Current jets upwelling global operational model Current-meter data [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
topographic waves shelf break Malvinas Current jets upwelling global operational model Current-meter data [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Poli, Léa Artana, Camila Provost, Christine Sirven, Jérôme Sennéchael, Nathalie Cuypers, Yannis Lellouche, Jean-Michel Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model |
topic_facet |
topographic waves shelf break Malvinas Current jets upwelling global operational model Current-meter data [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The Patagonian slope hosts a variety of waves. We used a state of the art ocean reanalysis to examine waves at the shelf break and in the core of the Malvinas Current (MC) at periods larger than 10 days. Statistics over 25 years indicated three types of signals: in phase signals at specific locations of the shelf break to the south of 47°S, fast propagating signals all along the shelf break (phase speed from 140 cm/s to 300 cm/s) at periods between 5 and 110 days, and slower signals in the core of the MC (phase speeds from 10 cm/s to 30 cm/s) at 20‐day, 60‐day and 100‐day periods.The large zonal wind stress variations south of 47°S forced in‐phase along‐slope velocity variations and triggered fast propagating waves at distinct sites corresponding to abrupt changes in the shelf break orientation. The shelf break waves modulated the intensity of the inshore jet, which varied from 0 to 30 cm/s at 100 m depth, and had spatial and temporal structures and scales consistent with those of observed upwelling events. Slow propagating waves in the core of the MC had along‐slope wavelengths between 450 and 1200 km and were not forced by the local winds. They were tracked back to the Drake Passage and the Malvinas Escarpment. |
author2 |
Austral, Boréal et Carbone (ABC) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Mercator Océan Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Service hydrographique et océanographique de la Marine-Centre National de la Recherche Scientifique (CNRS)-Météo-France Variabilité de l'Océan et de la Glace de mer (VOG) Processus et interactions de fine échelle océanique (PROTEO) |
format |
Article in Journal/Newspaper |
author |
Poli, Léa Artana, Camila Provost, Christine Sirven, Jérôme Sennéchael, Nathalie Cuypers, Yannis Lellouche, Jean-Michel |
author_facet |
Poli, Léa Artana, Camila Provost, Christine Sirven, Jérôme Sennéchael, Nathalie Cuypers, Yannis Lellouche, Jean-Michel |
author_sort |
Poli, Léa |
title |
Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model |
title_short |
Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model |
title_full |
Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model |
title_fullStr |
Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model |
title_full_unstemmed |
Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model |
title_sort |
anatomy of subinertial waves along the patagonian shelf break in a 1/12° global operational model |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03015284 https://hal.science/hal-03015284/document https://hal.science/hal-03015284/file/Poli2020JC016549.pdf https://doi.org/10.1029/2020jc016549 |
genre |
Drake Passage |
genre_facet |
Drake Passage |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-03015284 Journal of Geophysical Research. Oceans, 2020, 125 (12), pp.e2020JC016549. ⟨10.1029/2020jc016549⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020jc016549 hal-03015284 https://hal.science/hal-03015284 https://hal.science/hal-03015284/document https://hal.science/hal-03015284/file/Poli2020JC016549.pdf doi:10.1029/2020jc016549 WOS: 000603643300014 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020jc016549 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
125 |
container_issue |
12 |
_version_ |
1799479093883830272 |
spelling |
ftceafr:oai:HAL:hal-03015284v1 2024-05-19T07:39:31+00:00 Anatomy of subinertial waves along the Patagonian shelf break in a 1/12° global operational model Poli, Léa Artana, Camila Provost, Christine Sirven, Jérôme Sennéchael, Nathalie Cuypers, Yannis Lellouche, Jean-Michel Austral, Boréal et Carbone (ABC) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Mercator Océan Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Service hydrographique et océanographique de la Marine-Centre National de la Recherche Scientifique (CNRS)-Météo-France Variabilité de l'Océan et de la Glace de mer (VOG) Processus et interactions de fine échelle océanique (PROTEO) 2020-12 https://hal.science/hal-03015284 https://hal.science/hal-03015284/document https://hal.science/hal-03015284/file/Poli2020JC016549.pdf https://doi.org/10.1029/2020jc016549 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2020jc016549 hal-03015284 https://hal.science/hal-03015284 https://hal.science/hal-03015284/document https://hal.science/hal-03015284/file/Poli2020JC016549.pdf doi:10.1029/2020jc016549 WOS: 000603643300014 info:eu-repo/semantics/OpenAccess ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-03015284 Journal of Geophysical Research. Oceans, 2020, 125 (12), pp.e2020JC016549. ⟨10.1029/2020jc016549⟩ topographic waves shelf break Malvinas Current jets upwelling global operational model Current-meter data [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2020 ftceafr https://doi.org/10.1029/2020jc016549 2024-04-25T01:47:03Z International audience The Patagonian slope hosts a variety of waves. We used a state of the art ocean reanalysis to examine waves at the shelf break and in the core of the Malvinas Current (MC) at periods larger than 10 days. Statistics over 25 years indicated three types of signals: in phase signals at specific locations of the shelf break to the south of 47°S, fast propagating signals all along the shelf break (phase speed from 140 cm/s to 300 cm/s) at periods between 5 and 110 days, and slower signals in the core of the MC (phase speeds from 10 cm/s to 30 cm/s) at 20‐day, 60‐day and 100‐day periods.The large zonal wind stress variations south of 47°S forced in‐phase along‐slope velocity variations and triggered fast propagating waves at distinct sites corresponding to abrupt changes in the shelf break orientation. The shelf break waves modulated the intensity of the inshore jet, which varied from 0 to 30 cm/s at 100 m depth, and had spatial and temporal structures and scales consistent with those of observed upwelling events. Slow propagating waves in the core of the MC had along‐slope wavelengths between 450 and 1200 km and were not forced by the local winds. They were tracked back to the Drake Passage and the Malvinas Escarpment. Article in Journal/Newspaper Drake Passage HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Journal of Geophysical Research: Oceans 125 12 |