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Article Dans Une Revue EPL - Europhysics Letters Année : 2016

Energy cascade in internal wave attractors

Résumé

One of the pivotal questions in the dynamics of the oceans is related to the cascade of mechanical energy in the abyss and its contribution to mixing. Here, we propose internal wave attractors in the large amplitude regime as a unique self-consistent experimental and numerical setup that models a cascade of triadic interactions transferring energy from large-scale monochro-matic input to multi-scale internal wave motion. We also provide signatures of a discrete wave turbulence framework for internal waves. Finally, we show how beyond this regime, we have a clear transition to a regime of small-scale high-vorticity events which induce mixing. Introduction.
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Dates et versions

hal-01276711 , version 1 (19-02-2016)

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Christophe Brouzet, Evgeny V Ermanyuk, Sylvain Joubaud, Ilias Sibgatullin, Thierry Dauxois. Energy cascade in internal wave attractors. EPL - Europhysics Letters, 2016, 113, pp.60008. ⟨hal-01276711⟩
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