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- Title
Explosive instability of geostrophic vortices. Part 1: baroclinic instability.
- Authors
Carton, Xavier; Flierl, Glenn R.; Perrot, Xavier; Meunier, Thomas; Sokolovskiy, Mikhail A.
- Abstract
In a quasi-geostrophic model, we study the baroclinic instability of a two-layer vortex. The singular unstable modes for potential vorticity anomalies are compared with the classical normal modes. Short-time singular modes are explosively unstable and, at short times, depend only on the baroclinic component of the flow. As time progresses, they evolve towards the normal modes and their sensitivity to flow parameters is explored. Asymptotic solutions are provided.
- Subjects
BAROCLINICITY; VORTEX motion; BAROCLINIC models; FLUID dynamics; MATHEMATICAL models
- Publication
Theoretical & Computational Fluid Dynamics, 2010, Vol 24, Issue 1-4, p125
- ISSN
0935-4964
- Publication type
Article
- DOI
10.1007/s00162-009-0140-7