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| Menesguen, Claire; Mcwilliams, J.c.; Molemaker, M. Jeroen. |
| Oceanic large- and meso-scale flows are nearly balanced in forces between Earth’s rotation and density stratification effects (i.e. geostrophic, hydrostatic balance associated with small Rossby and Froude numbers). In this regime advective cross-scale interactions mostly drive energy toward larger scales (i.e. inverse cascade). However, viscous energy dissipation occurs at small scales. So how does the energy reservoir at larger scales leak toward small-scale dissipation to arrive at climate equilibrium? Here we solve the linear instability problem of a balanced flow in a rotating and continuously stratified fluid far away from any boundaries (i.e. an interior jet). The basic flow is unstable not only to geostrophic baroclinic and barotropic instabilities,... |
| Tipo: Text |
Palavras-chave: Baroclinic flows; Critical layers; Stratified flows. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00128/23906/21847.pdf |
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