| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Wind-induced barotropic oscillations around the Saint Pierre and Miquelon archipelago (North-west Atlantic)
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| Autores: |
Bezaud, Marion
Lazure, Pascal
Le Cann, Bernard
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| Data: |
2020-04
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| Ano: |
2020
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| Palavras-chave: |
Barotropic modelling
Wind induced oscillations
Continental shelf wave
Saint Pierre and Miquelon archipelago
Newfoundland
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| Resumo: |
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 to 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 north-west 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.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00606/71803/70291.pdf
DOI:10.1016/j.csr.2020.104062
https://archimer.ifremer.fr/doc/00606/71803/
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| Editor: |
Elsevier BV
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| Formato: |
application/pdf
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| Fonte: |
Continental Shelf Research (0278-4343) (Elsevier BV), 2020-04 , Vol. 195 , P. 104062 (19p.)
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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