Beta-plane turbulence: experiments with altimetry
Abstract
Results from a new series of experiments on barotropic and baroclinic turbulent flows generated in a rotating tank with topographic beta-effect are presented. The velocity fields are measured by the Altimetric Imaging Velocimetry. The turbulent flows observed in the experiments develop zonal jets which are latent in a stationary forced-dissipative regime of the flow but become prominent in the decaying flow. The two-dimensional energy spectra of the flows exhibit the development of anisotropy towards zonal motions. The experiments demonstrate dual turbulent cascade with energy and enstrophy ranges. The frequency-wavenumber spectra reveal the presence of Rossby waves at low wavenumbers which are excited by the turbulent motions. The experimental results are compared with available theory of beta-plane turbulence.
Keywords
Cite
@article{arxiv.1309.6197,
title = {Beta-plane turbulence: experiments with altimetry},
author = {Y. Zhang and Y. D. Afanasyev},
journal= {arXiv preprint arXiv:1309.6197},
year = {2014}
}