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Reasons for complete mixing of meromictic reservoir are an interesting scientific problem. There are many salt lakes of meromictic type. Water column in such lakes is not mixed down to the bottom for at least one year. So two layers are formed: an upper layer saturated with oxygen and a bottom layer without oxygen but with hydrogen sulphide accumulate. There is a water layer with large density gradient between them, while in the upper and near-bottom layers density gradients are small. In case of mixing of the upp...

A salt stratified Lake Shira has been the subject of extensive research because of its central role in the existence of the Khakassia resort area. The previous research was mainly aimed at water quality issues. The studies of the physical dynamics of Lake Shira relevant to the present work include the general observation of currents on the basis of the field experiments in 2011-2014. Velocity measurements were carried out using Doppler Current Profilers with frequency 600 kHz and 1200 kHz in the bottom track mode ...