Periods of separation and classification of the bays of the Volgograd reservoir by the primary volume
The derivative processes of alongshore transport and sedimentation of sediments are consequences of the process of coastal performance. Alongshore sediment transfer initiated the separation of the bays from the main water area of the Volgograd Reservoir by abrasion-accumulative jumpers. Nowthis process remains virtually unstudied. Determination of the periods of separation of bays by abrasion- accumulative jumpers and primary volume of the bays (1958) presents scientific interest. The separation periods were determined and classification of the bays by primary volume was spent in this article. Satellite imagery and maps of 1958 were the materials of this researching. 76 right-coast bays and 43 left-coast bays were separated from the main water area of the Volgograd Reservoir by August of 2018. More than a quarter of the reservoir bays (28,3 %) were separated before 1986. Now more than half (63,6 % of the total number) of the reservoir bays are closed bays ore bays in final stage of separation. The primary volume of the bays of the Volgograd reservoir is a determining, but not the only factor contributing to their separation. The start of activation of abrasion-accumulative processes also depends on other factors: the morphological features of the bay, the lithological composition of the coast, the speed and direction of the waves, the frequency and repeatability of storms, and the anthropogenic factor. The bays by primary volume were divided into 4 classes: small (with a volume of less than 300 thousand m3), medium (300-1000 thousand m3), large (1000-10000 thousand m3) and very large (more than 10000 thousand m3). Small bays are most actively separated from the waters of the Volgograd reservoir, medium bays separates a lesser degree.