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2018 year, issue 4

HYDRODYNAMIC WATER CONDITIONS IN THE BAKALSKAYA SPIT AREA
B.V.Divinsky

Abstract
The variability of wind waves parameters and sea currents in the Bakalskay Spit area is analyzed. Using the main research method as mathematical modeling, the characteristic features of wind wave variability on the climatic time interval (1979 – 2017) are revealed, as well as the intra-annual variations of current velocity are estimated. The most characteristic features of the climatic variability of wind waves are: a decrease in the frequency of western to southwestern storms; a very significant decrease in the average wave heights during northern-northwestern and southern-southwestern storms; some increase in the wave heights during western-northwestern and northern-northeastern storms. Near the western part of the spit, on average for a year, storm waves (exceeding 5 kV/m) lasts about 14 days, for the eastern (> 2 kV/m) 9 days. The greatest frequency (up to 15 % within the annual cycle) has currents directed from the open sea to the Karkinitsky Bay. The reverse flow (from northeast to southwest) was observed in 10 % cases (in 2016). The maximum currents are possible, mainly, in winter and can reach 0,7 m/s. The results of a full-scale experiment on the sea currents study are also presented.
KEYWORDS
wind waves, sea currents, ADCP, the Bakalskaya Spit, the Crimea

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