Typization and Evolution Trends of Coasts of the Western Part of the Sea of Okhotsk
https://doi.org/10.31857/S2587556621030092
Abstract
The article presents the results of coastal relief research of the Western Okhotsk region, one of the most poorly studied and hard-to-reach areas of the Sea of Okhotsk. Based on morphodynamic characteristics and the shores’ genetic classification, it has been typified and zoned the coast of the Western Okhotsk region. The factors affecting the coast relief formation are identified. The complex coastal relief is determined by the region’s geological structure, while the river runoff, activity of the ice, and abrasion of the seacoast influence sedimentary material input. It has been established that within the study area, denudation and longshore sediment transit prevail on most of the studied coasts. Sections of modern accumulation are confined to the bays’ tops and the rivers’ mouths. In the event of a possible sea level rise at the abrasion-bay coast, abrasion becomes more active on the capes protruding into the sea. The World Ocean level rise will lead to a significant estuaries’ transformation. Presumably, there will be flooding and erosion of marches and alluvial lowlands. The performed studies can be used in predicting the further region’s economic development, identifying the environmental consequences of an increasing anthropogenic impact on the coast and for recreation.
Keywords
coastal area,
morphodynamic characteristics,
abrasion-denudation shores,
currents,
foreshore,
marches,
the Sea of Okhotsk
Supporting agencies: The work was supported by the Ministry of Science and Higher Education of the Russian Federation, project no. 121021700342-9.
About the Authors
T. D. Leonova
Il’ihev Pacific Oceanological Institute, Far Eastern Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Vladivostok
O. V. Belous
Il’ihev Pacific Oceanological Institute, Far Eastern Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Vladivostok
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Review
For citations:
Leonova T.D., Belous O.V. Typization and Evolution Trends of Coasts of the Western Part of the Sea of Okhotsk. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2021;85(3):422-432. (In Russ.) https://doi.org/10.31857/S2587556621030092
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