Field of Total Suspended Matter Concentration of Anthropogenic Nature at the Southern Coast of the Heraclean Peninsula (Crimea)

P. D. Lomakin*, A. I. Chepyzhenko

Marine Hydrophysical Institute of RAS, Sevastopol, Russia

* e-mail: p_lomakin@mail.ru

Abstract

Based on the data of a series of expeditions conducted in 2008–2019, the paper analyzes features of the structure of the total suspended matter concentration field in the areas of underwater discharge outlets of urban wastewaters. The linear scale of their influence was estimated. The regularities of domestic wastewaters distribution were considered for three types of background stratification of the water column. It was revealed that the field of the analyzed value was extremely heterogeneous in the studied coastal areas. At the sea surface, against the background of low natural concentration, individual spots were observed with a concentration ten times higher than the surrounding background. The main mass of suspended matter in the outlet area was accumulating in the 0–7 m layer. In the subsurface waters, the structure of the field under consideration shows local maxima, as well as isolated lenses with low salinity. The anthropogenic suspension spread to a distance of 0.4–1.5 miles from the discharge sites. The paper confirms the known regularities of the distribution of wastewaters from deep-sea outlets. These regularities are determined by the water column stratification and are as follows: free penetration to the surface in a homogeneous environment, predominantly horizontal transport in the presence of a seasonal thermocline, and rise to the sea surface in a situation of wind upwelling against a developed seasonal thermocline.

Keywords

total suspended matter, temperature, salinity, anthropogenic impact, Heraclean Peninsula, Black Sea

Acknowledgments

The work was performed under state assignment of Marine Hydrophysical Institute of RAS on topic FNNN-2021-0005 “Complex interdisciplinary research of oceanologic processes, which determine functioning and evolution of the Black and Azov Sea coastal ecosystems”.

For citation

Lomakin, P.D. and Chepyzhenko, A.I., 2024. Field of Total Suspended Matter Concentration of Anthropogenic Nature at the Southern Coast of the Heraclean Peninsula (Crimea). Ecological Safety of Coastal and Shelf Zones of Sea, (1), pp. 68–81.

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