Features of lithodynamics of pebble beaches at south coast of Crimea

https://doi.org/10.35595/2414-9179-2021-3-27-85-97

View or download the article (Rus)

About the Authors

Alexander S. Boguslavsky

Marine Hydrophysical Institute RAS,
Kapitanskaya str., 2, Sevastopol, Russia;
E-mail: al_bhs@mail.ru

Sergey I. Kazakov

Marine Hydrophysical Institute RAS,
Kapitanskaya str., 2, Sevastopol, Russia;
E-mail: science@bshpg-ras.ru

Abstract

The results of the study of the peculiarities of lithodynamics of pebble beaches of the South Coast of Crimea based on the long-term monitoring of the state of beaches performed at the Black Sea Hydrophysical Subsatellite Proving Ground of the Marine Hydrophysical Institute of the Russian Academy of Sciences in the settlement of Katsiveli are presented.

Long-term changes of the beach of Limensky Bay since 1950 and of beaches of the shore protection structures since 1988 are characterized. The volume of income and outcome of pebbles during the change of wind-wave regimes was estimated by the example of Limensky Bay beach and the artificial beaches of the coast protection structures in the coastline section from Katsiveli to Ponizovka settlement.

The most influential factor in the formation of the pebble beaches of the Southern Coast of Crimea is the change in alongshore wind-wave regimes in the “days-months” time scale, which leads to significant fluctuations in sea level near the coast and a corresponding change in the directions of the bottom current velocity components perpendicular to the shoreline. The largest expense and income of beach-forming material (up to 1 m3/day per linear meter of beach) occurs during storms, respectively, with wind-wave regimes of the eastern and western directions.

The largest irreversible removal of the mass of beach-forming materials during the change in wind-wave regimes occurs from the eastern and central sections of the bays and artificial beaches of coastal protection structures, and partial restoration of beaches—on their western sections.

Natural underwater reefs in the coastal waters of bays and artificial beaches of shore protection structures contribute to the preservation of beaches in them.

The reason for the gradual average long-term degradation of beaches may be the predominance of eastern storm winds over western ones in conditions of blocking the natural income of beach-forming materials from the coast by the coastal infrastructure objects.

Keywords

beaches, formation, lithodynamics, wind-wave regime, bottom currents, South coast of Crimea, geoinformation.

References

  1. Boguslavsky A.S., Kuznetsov A.S., Kazakov S.I. Factors of pebble beach formation in the coastal zone of the mountain Crimea. Ecological safety of coastal and shelf zones of sea, Sevastopol, 2016. Issue 1. P. 46–54 (in Russian).
  2. Goryachkin Yu.N., Fomin V.V., 2020. Wave Regime and Lithodynamics in the Region of the Western Crimea Accumulative Coasts. Physical Oceanography, [e-journal], 2020. V. 27. No. 4. P. 415–429. DOI: 10.22449/1573-160X-2020-4-415-429 (in Russian).
  3. Inman D.L., and Filloux J. Beach cycles related to tide and local wind wave regime. The Journal of Geology, 1960. V. 68. No. 2. P. 225–231.
  4. Kosyan R.D., Krylenko M.V. Experience of protection against wave erosion of the eastern coast of the Black Sea [e-journal]. Gelendzhik: SO IO RAS, 2008. http://www.coruna.coastdyn.ru/pg024.html (in Russian).
  5. Naumova V.A., Evstigneev M.P., Evstigneev V.P., Lyubarets E.P. Wind-wave conditions of the Azov-Black Sea coast of Ukraine. Proceedings of UkrNIGMI, 2010. Issue 259. P. 263–283 (in Russian).
  6. Orlova M.S., Dolotov V.V., Ivanov V.A. Development of a cadastral assessment of beaches on the example of the Crimean coast. Proceedings of the international conference, “Latvia–Europe, Europe–Latvia” Latvia, Rezekne, SIA “JUMI”, BKI, 2006. P. 103–104 (in Russian).
  7. Repetin L.N., Belokopytov V.N. Wind regime over the coast and shelf of the northeastern part of the Black Sea. Proceedings of UkrNIGMI, 2008. Issue 257. P. 84–105 (in Russian).
  8. Shadrin N.V. Emissions of algae in the Black Sea supralittoral: ecological and geochemical role. Reports of the National Academy of Sciences of Ukraine, 1998. No. 3. P. 192–195.
  9. Shuleikin V.V. Physics of the sea. Moscow: Nauka, 1968. 1084 p. (in Russian).
  10. Udovik V.F., Goryachkin Yu.N. Interannual variability of alongshore sediment flow in the coastal zone of Western Crimea. Ecological safety of the coastal and shelf zones and comprehensive research of shelf resources. Sevastopol: 2013. Issue 27. V. 1. P. 363–368. (in Russian).
  11. Wadell H. Volume, shape, and roundness of rock particles. J. Geol., 1932. No. 40. P. 443–451.
  12. Zenkovich V.P. Morphology and dynamics of the Soviet Black Sea coast. V. 1, 2. Moscow: AN SSSR, 1960. 215 p. (in Russian).

For citation: Boguslavsky A.S., Kazakov S.I. Features of lithodynamics of pebble beaches at south coast of Crimea InterCarto. InterGIS. GI support of sustainable development of territories: Proceedings of the International conference. Moscow: MSU, Faculty of Geography, 2021. V. 27. Part 3. P. 85–97. DOI: 10.35595/2414-9179-2021-3-27-85-97 (In Russian)