ON DYNAMICS OF HYDROTHERMAL FLOWS FROM LO CAL HOT VENTS (BLACK SMOKERS) ON THE OCEAN-BOTTOM

A new approach to the problem of the closure of the integral equations system (IES), describing the dynamics of the buoyant turbulent jet (B TJ) in the stratified fluid is suggested. As a result the analytical f ormula of Taylor's ''entraiment constant'' was obtained from the jet f orm parameters. The solution of IES was obtained with Runge-Kutt metho d of the fourth order accuracy. Approbation of the numerical model of BTJ was carried out using the data of measurements of characteristics of high temperature fluid flows, entering bottom waters from hydrother mal vents (''black smokers'') for two regions of the ocean. The model form of BTJ is suggested, which allows to get analytical formula of th e maximum height of the jet H-m, depending on the boundary parameters of the flow at the exit from the vent and stratification of surroundin g waters. The value H-m was compared with the calculations of the maxi mum height of the rising jet, using Temer's empirical formula [5], pro posed more than 30 years ago, and this comparison showed a good agreem ent with H-m, which was calculated, using the two formulas.