Instabilities and layering around floating vortices in rotating stratified fluids

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• Michael LeBars (CNRS (Centre national de la recherche scientifique))
• Tuesday 21 May 2024, 15:00-15:30
• Seminar Room 1, Newton Institute.

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ADIW03 - Climate Applications of Layering

At the edge of meso-scale oceanic eddies (including meddies), horizontal layering is observed, corresponding to density steps. This is a local signature of an intense vertical mixing, which could participate in closing the energy budget of the oceans. To quantify the importance of this mechanism, we first need to determine the origin of the underlying instability/ies. This is the purpose of our combined theoretical and experimental study, where we systematically assess the intensity and the structures of the various instabilities taking place around model vortices in a rotating stratified ambient, as a function of the Rossby, Froude, Ekman, and Schmidt numbers.

This talk is part of the Isaac Newton Institute Seminar Series series.

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