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Provedor de dados:  ArchiMer
País:  France
Título:  Thermal instability in rotating shallow water with horizontal temperature/density gradients
Autores:  Gouzien, E.
Lahaye, Noe
Zeitlin, V.
Dubos, T.
Data:  2017-10
Ano:  2017
Resumo:  A specific instability of vortices is found in rotating shallow water equations with horizontal density/temperature gradients, which is used for modelling atmospheric and oceanic mixed layers. The model is re-interpreted as dynamics of rotating non-isentropic two-dimensional gas. The instability, which was not reported previously, develops in a way suggesting its convective character. It appears when anomaly of buoyancy at the center of the vortex and the vorticity have opposite signs (for positive Coriolis parameters), and coexists with the standard barotropic instability, having higher growth rates in a wide range of parameters and leading to efficient mixing at a nonlinear stage. Published by AIP Publishing.
Tipo:  Text
Idioma:  Inglês

Editor:  Amer Inst Physics
Formato:  application/pdf
Fonte:  Physics Of Fluids (1070-6631) (Amer Inst Physics), 2017-10 , Vol. 29 , N. 10 , P. 101702 (5p.)
Direitos:  info:eu-repo/semantics/openAccess

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