Hazard of the Coast of the South-Western Crimea
https://doi.org/10.18384/2712-7621-2022-3-6-23
Abstract
Aim. We assess the risks associated with abrasion processes on the coast of the South-Western Crimea on the basis of ground-based and multi-temporal remote data.
Methodology. The dynamics of the water’s edge lines and the edge of the coastal ledges for the period from 2009 to 2019 is analyzed using the data from space and aerial photographs. The physical risk of land loss is assessed on the basis of data on the rate of retreat of the coastline and its indentation. The specific risk indicator takes into account not only the speed of the process development, but also the width of the beach and the length of the sector.
Results. The paper presents the results of the assessment of the abrasion hazard of the South- Western Crimea. The coastal zone of the South-Western Crimea from Cape Sarych to Cape Tyubek with a length of 92 km is considered. Data are obtained on the granulometric composition of beach sediments, the width of the beach and abrasion scarp, and their dynamics for the period from 2009 to 2019. The granulometric composition is dominated by beaches composed of sand and pebble deposits (40%), and less accounted for by pebble and boulder beaches (35%). The minimum (less than 0.5 m) width of the beach is characteristic of abrasion coasts in the area from Cape Khersones to Cape Aya, while the maximum (up to 110 m) width is in the estuarine zone of the Kacha and Belbek rivers. The assessment of the physical and specific risk of land loss is calculated based on the average rates of coastal retreat, the position of the coastline (exposure, indentation), geological and geomorphological features, and the degree of development of the coast. Areas with significant indicators (>0.1 m2/year) of the physical risk of abrasion occupy 29% of the entire coastline of the city of Sevastopol.
Research implications. The theoretical and/or practical significance of the obtained results lies in a differentiated approach to coastal zone management, taking into account the degree of risk and the development of territorial development plans.
About the Authors
A. A. Novikov
Lomonosov Moscow State University (Branch in Sevastopol); Institute of Natural and Technical Systems
Russian Federation
Russian Federation
Anton A. Novikov – Senior Lecturer, Department of Geoecology and Nature Management, Faculty of Natural Sciences
ul. Geroev Sevastopolya 7, Sevastopol 229001
ul. Lenina 28, Sevastopol 299011
E. S. Kashirina
Lomonosov Moscow State University (Branch in Sevastopol); Sevastopol State University
Russian Federation
Russian Federation
Ekaterina S. Kashirina – Cand . Sci . (Geography), Senior Lecturer, Department of Geoecology and Nature Management, Faculty of Natural Sciences; Assoc. Prof., City Development Institute
ul. Geroev Sevastopolya 7, Sevastopol 229001
ul. Universitetskaya 33, Sevastopol 299053
E. I. Golubeva
Lomonosov Moscow State University
Russian Federation
Russian Federation
Elena I. Golubeva – Dr. Sci . (Biology), Prof., Department of Environmental Management, Faculty of Geography
Leninskie gory 1, Moscow 119991
V. S. Tikunov
Lomonosov Moscow State University
Russian Federation
Russian Federation
Vladimir S. Tikunov – Dr. Sci. (Geography), Prof., Department of Geography of the World Economy and Head of the Research Laboratory for Integrated Mapping, Geography Faculty
Leninskie gory 1, Moscow 119991
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