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SUMMARY:Experimental insights on the coupling between oceanic internal tid
 es and lee waves - Yvan Dossmann\, Université de Lorraine\, Nancy
DTSTART:20221114T130000Z
DTEND:20221114T140000Z
UID:TALK184133@talks.cam.ac.uk
CONTACT:9780
DESCRIPTION:Usual parameterizations of mixing in global models quantify in
 dependently the contribution of internal tides -- generated by barotropic 
 flows -- and lee waves -- generated by quasi-steady flows -- relying on a 
 linear approach. However the combined effects of the tidal and quasi-stead
 y flows causes a linear coupling between internal tides and lee waves that
  has been overlooked in internal wave mixing parameterizations over the la
 st decades. \n\nLaboratory experiments have confirmed the dynamical effect
 s of this linear coupling on internal wave propagation and energy fluxes b
 ased on high resolution density measurements with the Light Attenuation Te
 chnique (LAT). Moreover\, strong nonlinear processes such as the formation
  of periodic vortices have been measured in the bottom boundary layer. I w
 ill present the main results of this experimental campaign and discuss the
 ir implications for the parameterization of internal wave induced mixing a
 t the oceanic scale.
LOCATION:MR5\, CMS
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