An analysis of the moored current velocity data obtained at two depth levels in the Mesopolygon experiment showed that submesoscale disturbances of the velocity field can be approximated by a system of plane waves. Their period, wavelength, and direction of propagation were determined. The waves produce a locally dense distribution of submesoscale eddies in the stream of the background current. These results were compared with the experimental data obtained in the northeastern part of the Norwegian Sea. Phase speed of the eddies and their time scales undisturbed by the Doppler effect, as well as the velocity of the eddy transport by the background currents, were estimated from the equation of vorticity conservation using experimental data. It is suggested that the dynamics of submesoscale and mesoscale eddies are similar.
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