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Estimates of the North-Crimean Canal cut-off effect on the variability of the Sivash Bay morphometric characteristics on satellite data

E.S. Eremina¹ , L.V. Kharitonova¹ , S.V. Stanichny¹

¹ Marine Hydrophysical Institute RAS, Sevastopol, Russia

Accepted: 12.10.2018
DOI: 10.21046/2070-7401-2018-15-7-175-183

The study is devoted to the variability of the Sivash Bay coastal area after the North-Crimean Canal, the main fresh water source in the northern and eastern Crimea from 1970s to 2014, that has been cut off. The Dnieper water flowed in the Canal and was used for industrial needs, agriculture, including irrigation of rice fields. New conditions for water consumption have changed the state of lagoon lakes and freshwater reservoirs in the coastal area of Sivash. In this paper, the shoreline changes in the Middle and Eastern Sivash are analyzed by comparison of high-resolution Landsat satellite images in infrared channels. Digitizing of the shoreline is carried out, and the water surface areas, volumes and specific surfaces for the Eastern Sivash, lagoon lakes, rice checks and artificial irrigation constructions are calculated for the time when the North-Crimean Canal was functioning and after its cutoff. At present, the seasonal draining of extensive shallow areas in the summer is a typical process in the Middle Sivash. The East Sivash Bay has changed a little; coastal shallow lagoons and bays have been drained. The draining area is noted to increase in the Genichesk Strait delta, while the main ducts have not changed their location and dimension.

Keywords: Sivash Bay, lagoon, coastline, remote methods, satellite images, North-Crimean Canal

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