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	Provedor de dados ArchiMer (1) Autor Carton, Xavier (1) Le Gentil, Sylvie (1) Menesguen, Claire (1) Meunier, Thomas (1) Schopp, Richard (1) Palavra-chave Instability (1) Intrathermocline eddies (1) Optimal perturbations (1) Vortex lenses (1) Tipo do documento Text (1) Ano 2018 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Optimal Perturbations of an Oceanic Vortex Lens ArchiMer Meunier, Thomas; Menesguen, Claire; Carton, Xavier; Le Gentil, Sylvie; Schopp, Richard. The stability properties of a vortex lens are studied in the quasi geostrophic (QG) framework using the generalized stability theory. Optimal perturbations are obtained using a tangent linear QG model and its adjoint. Their fine-scale spatial structures are studied in details. Growth rates of optimal perturbations are shown to be extremely sensitive to the time interval of optimization: The most unstable perturbations are found for time intervals of about 3 days, while the growth rates continuously decrease towards the most unstable normal mode, which is reached after about 170 days. The horizontal structure of the optimal perturbations consists of an intense counter-shear spiralling. It is also extremely sensitive to time interval: for short time... Tipo: Text Palavras-chave: Vortex lenses; Intrathermocline eddies; Instability; Optimal perturbations. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00454/56605/58297.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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