Excitation of large-scale inertial waves in a rotating inhomogeneous turbulence

T. Elperin; I. Golubev; N. Kleeorin; I. Rogachevskii

doi:10.1103/physreve.71.036302

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Excitation of large-scale inertial waves in a rotating inhomogeneous turbulence

T. Elperin·I. Golubev·N. Kleeorin·I. Rogachevskii

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Abstract

A mechanism of excitation of the large-scale inertial waves in a rotating inhomogeneous turbulence due to an excitation of a large-scale instability is found. This instability is caused by a combined effect of the inhomogeneity of the turbulence and the uniform mean rotation. The source of the large-scale instability is the energy of the small-scale turbulence. We determined the range of parameters at which the large-scale instability occurs, the growth rate of the instability and the frequency of the generated large-scale inertial waves. Geophysical and astrophysical applications of the obtained results are discussed.

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T. Elperin, I. Golubev, N. Kleeorin, I. Rogachevskii. 2004-11-11. Excitation of large-scale inertial waves in a rotating inhomogeneous turbulence. https://doi.org/10.1103/physreve.71.036302

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