P. D. Lomakin^*, Yu. N. Ryabtsev, A. I. Chepyzhenko

Marine Hydrophysical Institute of RAS, Sevastopol, Russian Federation

^* e-mail: p_lomakin@mail.ru

Abstract

Based on numerical modeling methods (a generalized three-dimensional barotropic linear model of Felsenbaum was used for the case of taking into account Rayleigh friction), the paper considers features of the structure of the current vectors field depending on wind conditions in an upwelling situation in the water area located along the northern coast of the Sevastopol seaside, between Capes Lukull and Tolsty. A two-layer transverse cell of water circulation, typical of upwelling, was identified. The currents were predominantly oriented downwind in the upper layer and in the opposite direction in the bottom layer. It is shown that in the analyzed water area upwelling was caused by northerly, north-easterly, easterly and south-easterly winds. Upwellings caused by the above winds differed in their location and area. Under a north-easterly wind, upwelling was most intense and widespread throughout the water area under consideration. Under a south-easterly wind, upwelling was formed in two small areas: in the bends of the coast, between Capes Margopulo and Lukull and north of Cape Tolsty. The modeling result was compared with data from expeditionary research. Their good agreement under a northerly wind was found.

Keywords

wind, currents, upwelling, numerical modeling, thermohaline structure, cape Lukull, Black Sea

Acknowledgments

The work was performed under state assignment of MHI RAS on topic FNNN-2024-0016 “Studies of spatial and temporal variability of oceanological processes in the coastal, near-shore and shelf zones of the Black Sea influenced by natural and anthropogenic factors on the basis of in situ measurements and numerical modelling”.

For citation

Lomakin, P.D., Ryabtsev, Yu.N. and Chepyzhenko, A.I., 2025. Upwelling in the Black Sea Water Area near Cape Lukull Based on Numerical Modeling and Observational Data. Ecological Safety of Coastal and Shelf Zones of Sea, (2), pp. 67–79.

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