Abstract : Internal gravity waves contribute to fluid mixing and energy transport, not only in oceans but also in the atmosphere and in astrophysical bodies. We provide here the first experimental measurement of the growth rate of a resonant triad instability (also called parametric subharmonic instability) transferring energy to smaller scales where it is dissipated. We make careful and quantitative comparisons with theoretical predictions for propagating vertical modes in laboratory experiments.
Type de document :
Article dans une revue
Physics of Fluids, American Institute of Physics, 2012, 24, pp.041703. 〈10.1063/1.4706183〉
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00616454
Contributeur : Sylvain Joubaud
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Soumis le : jeudi 26 avril 2012 - 21:30:04
Dernière modification le : jeudi 19 avril 2018 - 14:54:04
Document(s) archivé(s) le : vendredi 27 juillet 2012 - 02:41:34
Sylvain Joubaud, James Munroe, Philippe Odier, Thierry Dauxois. Resonant Triad Instability in Stratified Fluids. Physics of Fluids, American Institute of Physics, 2012, 24, pp.041703. 〈10.1063/1.4706183〉. 〈ensl-00616454v2〉
