Особенности современного строения подводной аккумулятивной формы банка Еленина

Abstract

The Elenina Bank is an underwater accumulative form of the eastern part of the Sea of Azov. It was formed 2.5-1.7 thousand years ago during the Phanagorian regression. During the subsequent sea level rise the Elenina Bank was under water. The analysis of the modern structure of the Elenina Bank was carried out using literary sources and remote sensing data. Digital models of the underwater relief for the Elenina Bank were built on the basis of Sentinel-2 satellite images using the method of mutual correlation of the brightness of the spectrum channels and depth. The length of the Elenina Bank is about 40 km, the width is up to 5 km, the minimum depth of the water area is 1.5-2 m. Arc-shaped ridges up to 6 km long were found at the western tip of the bank. Currently, the Elenina Bank is active accumulative form and influences the lithodynamic regime of the adjacent part of the Sea of Azov. The transverse profile of the bank indicates the predominant direction of sediment movement – from S to N. The Elenina Bank accumulates most of the sediments transferred to the S-SE, but there is practically no extension of the edge of the accumulative body to the North due to a sharp drop in depths. The presence of the accumulative body of the Elenina Bank contributes to the formation of strong and stable currents to the North of it.