[GTP] GTP MMM Seminar at NCAR-CORRECTION

[Silvia Gentile]

Hello,

I have corrected the date. It is July 19.

Very sorry for the confusion!!!

Silvia Gentile
NCAR IMAGe
1850 Table Mesa Drive
Boulder, CO 803035
www2.image.ucar.edu/IMAGe




Silvia Gentile wrote:
> Joint GTP MMM Seminar
>
> Feedback of zonal flows on Rossby/drift-wave turbulence driven by 
> small scale instability
> Colm Connaughton
> Warwick Mathematics Institute and Warwick Centre for Complexity 
> Science   
>
> We demonstrate theoretically and numerically the zonal-flow/wave 
> turbulence feedback mechanism in Charney-Hasegama-Mima turbulence 
> forced by a small scale instability. Zonal flows are generated by a 
> secondary modulational instability of the waves which are directly 
> driven by the primary instability. The shear generated by the zonal 
> flows then suppresses the small scale turbulence thereby arresting the 
> energy injection into the system. This process can be described using 
> nonlocal wave turbulence theory. Finally, the arrest of the energy 
> input results in saturation of the zonal flows at a level which can be 
> estimated from the theory and the system reaches stationarity even 
> without large scale damping.
> (Joint work with S. Nazarenko and B. Quinn)
>
>
> Tuesday July 19
> NCAR Foothills Laboratory 1
> 3450 Mitchell Lane
> Room FL1-2198 EOL Atrium
> Lecture 3:30pm
> Refreshments 3:15 PM
>