LOCAL COOLING OF THE SURFACE WATERS DURING THE SURGE AND DRIVE CURRENT
There are presented the results of theoretical and experimental researches of distributions of stratified current velocity, turbulent viscosity and temperature of water in Petrozavodsk bay of Lake Onega. Regularities of changes of structure of the system of currents with the surge and drive flow and density current as well as of the water temperature over the entire depth of lake and in time were revealed. It was discovered local cooling of the surface waters induced by increasing of the energy- and mass-exchange over the entire depth. There were revealed remaining in time features and periodically generated elements of the vertical distribution of coefficient of turbulent exchange. The ignitions of the intensity of turbulent exchange over the entire depth of lake causing the registered local cooling of waters at the surface were discovered.