In the laboratory, the phenomena accompanying the mixture of two fluids are so commonplace that they do not seem to merit investigation. In the ocean and atmosphere, the phenomena are presumably very similar, but the lack of a good theory on which to base calculations complicates the problem much more than in the laboratory.
Eckart, Carl. 1948. "An analysis of the stirring and mixing processes in incompressible fluids." Journal of Marine Research 7, (3). https://elischolar.library.yale.edu/journal_of_marine_research/666