Physical Oceanography, Vol. 18, No. 1, 2008
THERMOHYDRODYNAMICS OF THE OCEAN
INVESTIGATION OF THE CHARACTERISTICS OF SURGE PHENOMENA
IN THE SEA OF AZOV
V. A. Ivanov, V. V. Fomin, L. V. Cherkesov, and T. Ya. Shul’ga
We present the results of numerical simulation of currents and sea level for the Sea of Azov. In
calculations, we use a three-dimensional nonlinear mathematical model taking into account the
tangential wind stresses. We present the results of numerical analysis of the fields of currents
and the amplitudes of oscillations of the sea level at the coastal stations as functions of the maxi-
mum velocity and the period of constant action of the west wind.
The surge phenomena and wind currents in the Sea of Azov are important factors affecting the safety and
efficiency of operation of the marine transport and coastal infrastructure. The analysis of the influence of hydro-
meteorological conditions on the dynamics of waters in this region requires special complex investigations. The
prediction of the dependence of wind-induced deviations of the sea level at the coastal stations is of significant
applied importance for the estimation of ecological consequences for the regions located on the coasts of the Sea
There are numerous works devoted to the analysis of currents and surges in the Sea of Azov under various
wind conditions. In , the process of generation of long-wave disturbances caused by the passage of cyclones
over the Sea of Azov is studied by using the two-dimensional equations of shallow water. The wind waves and
circulation in this region for the spatially uniform and typical distributions of the wind are modeled in [2, 3].
In the present work, we study the surge phenomena induced by the action of tangential wind stresses in the
Sea of Azov. The numerical analysis of the fields of currents and the sea level is performed by using a nonlinear
σ-coordinate model [3, 4].
Statement of the Problem. Boundary and Initial Conditions
We introduce a coordinate system with
z-axes directed eastward, northward, and vertically up-
ward, respectively. In our analysis, we use the nonlinear equations of motion of a homogeneous incompressible
fluid in the shallow-water approximation [4, 5]:
Marine Hydrophysical Institute, Ukrainian Academy of Sciences, Sevastopol, Ukraine.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
12–25, January–February, 2008. Original article submitted July 6, 2006;
revision submitted September 12, 2006.
0928-5105/08/1801–0001 © 2008 Springer Science+Business Media, Inc. 1