| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
On the merger of subsurface isolated vortices
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| Autores: |
Ciani, Daniele
Carton, Xavier
Verron, Jacques
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| Data: |
2016-01
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| Ano: |
2016
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| Palavras-chave: |
Subsurface isolated vortices
Peddies
Meddies
Vortex merger
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| Resumo: |
Vortex merger is a phenomenon characterizing the whole class of geophysical vortices, from atmospheric storms and large oceanic eddies up to small scale turbulence. Here we focus on the merger of subsurface oceanic anticyclones in an idealized primitive equations model. This study has been motivated by past and recent observations of colliding lens-like anticyclones off of Gibraltar Strait. The critical conditions for merger (critical merger distance and time needed for merger) are determined. We will show that the predictions of classical two-dimensional merger are not verified for subsurface isolated vortices. For instance, critical merger distances will be reduced because of the vortex potential vorticity (PV) structure. The post-merger characteristics of the vortex (radius, extension and PV), are also determined. Merger-related effects, like production of peripheral filaments and small-scale eddies are also investigated and suggest the contribution of merger in both direct and inverse energy cascades.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00314/42563/44982.pdf
DOI:10.1080/03091929.2015.1135430
http://archimer.ifremer.fr/doc/00314/42563/
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| Editor: |
Taylor & Francis Ltd
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| Formato: |
application/pdf
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| Fonte: |
Geophysical And Astrophysical Fluid Dynamics (0309-1929) (Taylor & Francis Ltd), 2016-01 , Vol. 110 , N. 1 , P. 23-49
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| Direitos: |
2016 Taylor & Francis
info:eu-repo/semantics/openAccess
restricted use
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