Accueil > Actualités > Séminaires > Séminaire de Zhiyu Liu au LOCEAN


Titre : On shear instability in the ocean: critical Ri, marginality, turbulence parameterization
Nom du conférencier : Zhiyu Liu
Son affiliation : Xiamen University, China
Laboratoire organisateur : LOCEAN
Date et heure : 17-11-2014 11h00
Lieu : salle de réunion LOCEAN, tour 45/55, 4eme étage
Résumé :

In this talk, I will show how theory of shear instability can be used to examine stability characteristics of oceanic flows. In particular, simple methods to estimate critical Richardson number and marginality of observed flows have been developed and applied. The mechanistic link between dynamic instability and generated turbulence provides a natural way of parameterizing stratified turbulence in the ocean interior. The development and applications of a new shear instability theory that includes impacts of ambient turbulence on instability development will also be introduced.