Proceedings "Dynamics and Statistics of Coherent Structures in Turbulence" (2002) の原稿



A Numerical Experiment on the Zonal Jet Formation in 2-D Turbulent Flow on a Beta-Plane

  by Shigeo Yoden and Jitsuko Hasegawa

A series of numerical experiments on two-dimensional decaying turbulence are performed for a non-divergent barotropic fluid on a beta-plane (a tangential plane to a rotating planet with the effect of latitudinally varying Coriolis parameter f) in order to survey the nature of zonal jet formation from random initial fields. A parameter beta is swept systematically to show the dependence of latitudinal structure of the zonal jet on its magnitude. Dynamics of such zonal jet formations is investigated with a weakly nonlinear Rossby wave-zonal flow interaction theory.


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YODEN Shigeo <yoden@kugi.kyoto-u.ac.jp>
Created: September 25, 2002