ИСПОЛЬЗОВАНИЕ МАТЕРИАЛОВ ДИСТАНЦИОННОГО ЗОНДИРОВАНИЯ ЗЕМЛИ В ЛИТОДИНАМИЧЕСКИХ ИССЛЕДОВАНИЯХ (НА ПРИМЕРЕ БЕРЕГОВОЙ ЗОНЫ ОХОТСКОГО МОРЯ)

Abstract

. The features of coastal destruction on two key areas of the Sea of Okhotsk: Nabil-Lunsky and Nevelsky, are examined, using materials from remote sensing of the Earth. Section significantly different in natural conditions. The analysis of high-resolution satellite images of different times showed that in the Okhotsk sea (Nabil-Lunsky site) a significant factor affecting the dynamics of the coasts is the migration of cuspate bars and storm deformations. Morphologically, cuspate bars are large accumulative wave-like bodies with a period along the coast of about 350–500 m and an amplitude along the normal to the coast of 50–80 m. Cuspate bars s are known to slowly migrate in the direction of the coastal sediment flow. It was found that the average abrasion rate of the beach scarp according to the results of decoding different-time (1983–2010) satellite images and aerial photographs within the Nabil-Lunsky site was from 0.0 to 0.44 m/year. In the Nevel Strait, stability of the west coast is facilitated by wide watts and marches. The eastern coast (Sakhalin Island) in the area of Cape Ouangi is steep coast (slope is greater than 0.03), which favors the marginal erosion. Within the boundaries of the studied areas, the mean annual rate of abrasion was estimated. According to the results of deciphering the satellite images of the Cape Kamennyi area, it was found that the accumulative coasts from 1968 to 2006 were in relatively stable condition, and the abrasion-denudation shore at the seabed end of the cape was subjected to abrasion at speeds of 0.05–0.1 m/year