Water Circulation and Hydrological Structure in the Active
Layer of the 50-Mile Near-Shore Zone of the Russian Sector
of the Black Sea in August 2004

V. G. Krivosheya^a, V. G. Yakubenko^a, A. Yu. Skirta^a, and V. M. Shishkin^b

^a Southern Branch, Shirshov Institute of Oceanology, Russian Academy of Sciences, Gelendzhik, Russia
^b Azov Scientific–Research Institute for Fisheries, Rostov-on-Don, Russia

Received February 28, 2006; in final form, June 19, 2006

Abstract—The water dynamics and hydrological structure in the active (oxygen-containing) layer are consid-
ered on the basis of the hydrological survey carried out in the 50-mile near-shore zone of the Russian sector of
the Black Sea in August 2004 and over the permanent section from Gelendzhik to the central part of the sea.
Five mesoscale eddy structures of different signs were observed in the Main Black Sea Current between Sochi
and the Kerch Strait. Such a dynamic situation contributed to the intensive horizontal water exchange between
the near-shore and open sea waters as well as to the redistribution of water masses over the vertical in the active
sea layer, which is indicated by the deepening of the top boundary of the hydrogen sulfide zone in the Russian
sector of the sea by 15–20 m.

DOI: 10.1134/S0001437007020014

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