Abstract

The results of an in-situ study and mathematical modeling of a system of currents with wind-induced and density flows are presented. The model is based on the obtained dependences of its key parameters on the density-field characteristics, changes in the water level, and the water-reservoir topography. The revealed features of the of shear-velocity profile are indicated and a function of its distribution from the bottom to the open surface of the water is given. The model that was developed is verified by the data from measuring the parameters of currents and composition of water in the Petrozavodsk Bay of Onega Lake in September 2007. The regularities for the evolution of distributions of the coefficient of the turbulent exchange and current velocity over depth and in time are revealed.

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