The impact of tidal waves on impurity diffusion

A mathematical model is presented for the diffusion of a local impurity patch in the presence of waves in a homogeneous fluid. A semi-empirical equation for the turbulent diffusion of a passive substance is solved numerically, with the initial and boundary conditions imposed. Temporal evolution of the patch is studied in a tidal wave field. Relations have been derived linking the patch parameters with tidal characteristics.Translated by Mikhail M. Trufanov.