Data/hora: 03/06/2024 07:32:27

Provedor de dados: | 5
País: | France
Título: | On the merger of subsurface isolated vortices
Autores: | Ciani, Daniele; Carton, Xavier; Verron, Jacques.
Data: | 2016-01
Ano: | 2016
Palavras-chave: | Subsurface isolated vortices; Peddies; Meddies; Vortex merger.
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.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00314/42563/44982.pdf

DOI:10.1080/03091929.2015.1135430

http://archimer.ifremer.fr/doc/00314/42563/

Editor: | Taylor &amp; Francis Ltd
Formato: | application/pdf
Fonte: | Geophysical And Astrophysical Fluid Dynamics (0309-1929) (Taylor &amp; Francis Ltd), 2016-01 , Vol. 110 , N. 1 , P. 23-49

Fonte:

2016 Taylor &amp; Francis

info:eu-repo/semantics/openAccess

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