Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic)
International audience We investigate the nearly barotropic oscillations recently observed around the Saint Pierre and Miquelon (SPM) archipelago. They were recorded by two ADCPs at about 30 m depth during winter and spring 2014. These oscillations were the dominant signal on the currents with a per...
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ftunivbrest:oai:HAL:hal-02890244v1 2024-04-14T08:16:24+00:00 Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic) Bezaud, M Lazure, P. Le Cann, Bernard Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2020 https://hal.science/hal-02890244 https://hal.science/hal-02890244/document https://hal.science/hal-02890244/file/Bezaud_et_al_accepted.CSR2020.pdf https://doi.org/10.1016/j.csr.2020.104062 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.csr.2020.104062 hal-02890244 https://hal.science/hal-02890244 https://hal.science/hal-02890244/document https://hal.science/hal-02890244/file/Bezaud_et_al_accepted.CSR2020.pdf doi:10.1016/j.csr.2020.104062 info:eu-repo/semantics/OpenAccess ISSN: 0278-4343 EISSN: 1873-6955 Continental Shelf Research https://hal.science/hal-02890244 Continental Shelf Research, 2020, 195, pp.104062. ⟨10.1016/j.csr.2020.104062⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2020 ftunivbrest https://doi.org/10.1016/j.csr.2020.104062 2024-03-21T16:25:52Z International audience We investigate the nearly barotropic oscillations recently observed around the Saint Pierre and Miquelon (SPM) archipelago. They were recorded by two ADCPs at about 30 m depth during winter and spring 2014. These oscillations were the dominant signal on the currents with a period of 2-4 days. Our analysis shows that these oscillations were triggered by the wind. To investigate these oscillations, a 2D numerical model was implemented at a regional scale. The results from a realistic simulation confirmed the impact of wind forcing on ocean dynamics in the region. They also showed amplification of these oscillations around SPM, particularly in the northwest of the archipelago and near Burin Peninsula. Analyses suggested the influence of continental shelf wave dynamics at a 'regional' scale. This regional wave then triggers a 'local' scale continental shelf wave propagating anticyclonically around SPM in ~2 days. Schematic modelling simulations with periodic wind stress forcing and relaxation after a gust of wind show a strong current response in this region with a wind stress periodicity centred around 2 days, which is attributed to resonance in the SPM area. Article in Journal/Newspaper North West Atlantic Université de Bretagne Occidentale: HAL Continental Shelf Research 195 104062 |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Bezaud, M Lazure, P. Le Cann, Bernard Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic) |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience We investigate the nearly barotropic oscillations recently observed around the Saint Pierre and Miquelon (SPM) archipelago. They were recorded by two ADCPs at about 30 m depth during winter and spring 2014. These oscillations were the dominant signal on the currents with a period of 2-4 days. Our analysis shows that these oscillations were triggered by the wind. To investigate these oscillations, a 2D numerical model was implemented at a regional scale. The results from a realistic simulation confirmed the impact of wind forcing on ocean dynamics in the region. They also showed amplification of these oscillations around SPM, particularly in the northwest of the archipelago and near Burin Peninsula. Analyses suggested the influence of continental shelf wave dynamics at a 'regional' scale. This regional wave then triggers a 'local' scale continental shelf wave propagating anticyclonically around SPM in ~2 days. Schematic modelling simulations with periodic wind stress forcing and relaxation after a gust of wind show a strong current response in this region with a wind stress periodicity centred around 2 days, which is attributed to resonance in the SPM area. |
author2 |
Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Bezaud, M Lazure, P. Le Cann, Bernard |
author_facet |
Bezaud, M Lazure, P. Le Cann, Bernard |
author_sort |
Bezaud, M |
title |
Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic) |
title_short |
Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic) |
title_full |
Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic) |
title_fullStr |
Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic) |
title_full_unstemmed |
Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-West Atlantic) |
title_sort |
wind-induced barotropic oscillations around the saint pierre and miquelon archipelago (north-west atlantic) |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02890244 https://hal.science/hal-02890244/document https://hal.science/hal-02890244/file/Bezaud_et_al_accepted.CSR2020.pdf https://doi.org/10.1016/j.csr.2020.104062 |
genre |
North West Atlantic |
genre_facet |
North West Atlantic |
op_source |
ISSN: 0278-4343 EISSN: 1873-6955 Continental Shelf Research https://hal.science/hal-02890244 Continental Shelf Research, 2020, 195, pp.104062. ⟨10.1016/j.csr.2020.104062⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.csr.2020.104062 hal-02890244 https://hal.science/hal-02890244 https://hal.science/hal-02890244/document https://hal.science/hal-02890244/file/Bezaud_et_al_accepted.CSR2020.pdf doi:10.1016/j.csr.2020.104062 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.csr.2020.104062 |
container_title |
Continental Shelf Research |
container_volume |
195 |
container_start_page |
104062 |
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1796315051819270144 |