It is shown that stable summer density stratification can block the flow of methane with bottom layers of water to the surface, while intensive convective winter mixing increases its content due to the receipt of methane-saturated bottom water masses. The main influence on the hydrophysical processes in the Bay in August and February, April, have sea waters. The influence of the Chernaya river waters is significant only in the kutov part of the Bay, where the maximum concentration of methane dissolved in the water was obtained for the winter and summer seasons.
92.10.Lq Turbulence, diffusion, and mixing processes in oceanography
92.20.cf Marine organic chemistry
$^1$Department of physics of sea and inland waters, Faculty of Physics, M.V.Lomonosov Moscow State University.\
$^2$Department of physics of sea and inland waters, Faculty of Physics, M.V.Lomonosov Moscow State University.\
$^3$The A.O. Kovalevsky Institute of Marine Biological Research of RAS, Sevastopol, 299011
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