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CIT-2004
Distribution on depth of chemical and biological substances, temperatures and salinity in the closed reservoir (lake) basically occur under action of wind influence. The picture of wind currents depends on geometry of a reservoir, a direction and force of a wind, depth and density stratification. Density stratification is connected to non-uniform distribution of temperature and salinity of water on depth which, in turn, are formed under influence of external factors, for example, such, as solar radiation and a thermal exchange. The two-dimensional in a vertical plane mathematical model of wind currents in the closed stratified reservoirs is based on the equations of turbulent currents of a non-uniform liquid in Boussinesk approximation and “a firm cover” approximation.
It is shown, that as a first approximation for an estimation of vertical structure of lake it is possible to use one-dimensional models.
On the basis of the considered mathematical models the computer model of the closed stratified reservoir including one-dimensional models of vertical distribution of temperature, salinity, factor of the turbulent exchange, taking into account heat exchange through a surface and bottom of a reservoir and two-dimensional model in a vertical plane for wind currents is created. The model allows to investigate distributions of hydrophysical and biological variables on depth.
Research is executed at support of program FSP "Integration", the project ¹ Ý3-137 and Krasnoyarsk regional fund of a science, the project 12F003M. Research described in this publication was made possible in part by Award No. KY-002-X1 of the U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union (CRDF).
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