TY - JOUR
T1 - Selection of a radial wavelength of zonal flows
AU - Toda, Shinichiro
AU - Itoh, Kimitaka
AU - Hallatschek, Klaus
AU - Yagi, Masatoshi
AU - Itoh, Sanae I.
PY - 2006/10
Y1 - 2006/10
N2 - The nonlinear dynamics of coherent zonal flows is studied with periodic boundary conditions. We study nonlinear differential equations of zonal flows, which were previously derived in an analytic wave-kinetic model. Competition between the short wavelength zonal flow and the long wavelength zonal flow is studied. Although many stable stationary solutions are allowed, the radial periodicity length turns out to be a value around a particular length, when random small amplitude perturbations are chosen as the initial flow state.
AB - The nonlinear dynamics of coherent zonal flows is studied with periodic boundary conditions. We study nonlinear differential equations of zonal flows, which were previously derived in an analytic wave-kinetic model. Competition between the short wavelength zonal flow and the long wavelength zonal flow is studied. Although many stable stationary solutions are allowed, the radial periodicity length turns out to be a value around a particular length, when random small amplitude perturbations are chosen as the initial flow state.
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U2 - 10.1143/JPSJ.75.104501
DO - 10.1143/JPSJ.75.104501
M3 - Article
AN - SCOPUS:33847250558
SN - 0031-9015
VL - 75
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 10
M1 - 104501
ER -