Block Approach to the Simulation of Circulation and Tides in the Black Sea

S.F. Dotsenko1, ✉, V.B. Zalesny2, N.K.V. Sannikova1

1 Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russian Federation

2 Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, Russia

✉ e-mail: sf_dotsenko@mail.ru

Abstract

The article gives the analysis of tidal parameters in the Black Sea with the field data for a variety of marine coastal areas. The characteristics of the basic parameters of tidal oscillations in the region and the examples of cotidal maps and maps of the lines of equal amplitudes for the semi-diurnal tide are presented. Besides, the Black Sea water circulation is simulated using the block approach. The σ-model of the ocean circulation developed in the Institute of Numerical Mathematics of RAS is applied. The model spatial resolution over the longitude and latitude is about 4 km. 40 irregularly distributed σ-levels are preset over the vertical; the step in time is 300 s. The vortex structure is distinctly manifested in the Black Sea circulation. The Rim Current which characterizes general cyclonic circulation along the Black Sea perimeter forming two evident vortices is reproduced. In general, results of numerical modeling in seemed like a good match observational data, as well as the results of other models of the Black Sea. To describe generation of tides, the module corresponding to the Sun and Moon tide-generating potentials is introduced into the σ-model. The analysis showed that the tides in the Black Sea are weakly expressed because of the relative smallness of the pool area. As the Black Sea straits are shallow and relatively narrow, so that does not contribute to the development of tides.

Keywords

the Black Sea, general circulation, tides, mathematical model, block approach, computational experiments

For citation

Dotsenko, S.F., Zalesny, V.B. and Sannikova, N.K.V., 2016. Block Approach to the Simulation of Circulation and Tides in the Black Sea. Physical Oceanography, (1), pp. 3-19. doi:10.22449/1573-160X-2016-1-3-19

DOI

10.22449/1573-160X-2016-1-3-19

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