Physical Oceanography, Vol.
INVESTIGATION OF THE INFLUENCE OF WIND ACTION UPON THE CURRENTS
AND PROPAGATION OF IMPURITIES IN THE AZOV SEA
V. A. Ivanov,
V. V. F o m i n ,
L. V. Cherkesov,
and T. Ya. Shul’ga
The surge phenomena and currents in the Azov Sea caused by variable winds in the presence of station-
ary currents are studied by using a three-dimensional nonlinear mathematical model. The specific fea-
tures of the transformations of impurities in the water area of the Azov Sea under the joint action of sta-
tionary and nonstationary winds are investigated. On the basis of the results of numerical calculations,
we make conclusions concerning the dependence of the period of dissipation of impurities on the wind
velocity and the location of the regions with impurities. It is shown that the variable wind significantly
increases the deviations of the sea level and the area of distribution of the impurity as compared with the
action solely of the stationary currents.
Despite its small area, the Azov Sea has a fairly high economic value. First, it is characterized by signifi-
cant fish resources, which is explained by the fact that the sea is shallow-water and its waters have low salinity.
Rich deposits of medical mud and mineral waters create favorable conditions for the use of sea coasts for the
medical, health-resort, and recreational purposes. The Azov Sea is also an important link of transport communi-
cation between the ports of the Volga–Kama and Azov-Black-Sea basins. The sea has relatively small area and
volume but suffers strong anthropogenic loads observed in the form of its permanent freshening and deteriora-
tion of the quality of waters .
Due to the small depth and intracontinental location of the sea, its hydrological parameters are characterized
by well-pronounced time variations. Thus, according to the data of many-year observations , the amplitude
of oscillations of the sea level varies from 2.0 (Berdyansk) to 6.1 m (Taganrog). The Azov Sea is one of the
most comprehensively studied seas. A network of marine coastal stations and posts works on its coasts. Exten-
sive standard and specialized in-situ investigations are carried out. However, the available results of complex
studies capable of giving the general picture of hydrometeorological processes are quite poor.
The numerical simulations enable us to deeper understand the existing correlations between the Azov Sea
and the seasonal variations of weather. Thus, the analysis of long-wave disturbances caused by the passages of
cyclones over the Azov Sea is carried out in  by using the two-dimensional equations of shallow water. The
wind waves and circulation in this region are modeled in  for uniform (over the space) and typical distribu-
tions of the wind. In [5, 6], one can find the analysis of the period of complete dissipation of the impurity, the
maximum area of pollution, and the transformations of polluted regions under the action solely of the wind vari-
able as a function of time depending on its velocity.
Marine Hydrophysical Institute, Ukrainian National Academy of Sciences, Sevastopol, Ukraine.
Corresponding author; e-mail: email@example.com.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
15–28, May–June, 2010. Original article submitted November 20, 2008;
revision submitted March 13, 2009.
170 0928–5105/10/2010–0170 © 2010 Springer Science+Business Media, Inc.