The characteristic properties of turbulent motions are that they possess a random distribution of vorticity in which there is no unique relation between the frequency and wave number of the Fourier modes that they are diffusive and dissipative. Not all of the random motions found in the ocean, however, can be described properly as turbulence. Again, the response of the ocean to large-scale wind and thermal disturbances and the development of ocean currents is dependent on the transfer of matter, momentum and energy by irregular smaller scale motions of one kind or another. For example, the interplay between the ocean stratification and the diffusive turbulent motions is often crucial in determining the structure of each. In the ocean, no less than in the atmosphere, is its influence widespread. Turbulence is one of the most ubiquitous phenomena in all of fluid mechanics.
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