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Signs and geological prerequisites of seawater intru-sion into coastal aquifers (the example of the Black Sea)статья
- Авторы: Mironyuk S.G., Khlebnikova O.A.
- Журнал: Doklady Earth Sciences
- Номер: 507
- Год издания: 2022
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: S279
- Последняя страница: S288
- DOI: 10.1134/S1028334X22601572
- Аннотация: —Signs of seawater intrusion into aquifers on the Black Sea coast have been considered. A review of publications showed that this dangerous hydrogeological process develops under the influence of natural and anthropogenic factors, being almost global due to the rising sea level and growing urbanization of coastal areas. Local geomorphological, geological, and hydrological factors that have a decisive influence on the development of the intrusion have been indicated. The analysis of publications allowed us to outline the most vulnerable seashore areas as regards the development of the intrusion. The hazardous consequences of seawater intrusion into land aquifers (intensification of corrosion, deterioration of groundwater quality, degradation of coastal ecosystems, etc.) have been described. The data illustrating the signs and scale of seawater intrusion into certain coastal areas of the Black Sea coast have been presented. The main methods to study the hydrogeological situation at the survey sites were drillings, analysis of the hydrogeological section, laboratory studies of groundwater composition, shallow electrical survey methods (vertical electrical sounding, electro-tomography, symmetrical electro-profiling), etc. The main feature indicating the intrusion of seawater into the coastal aquifers was taken to be the salinity level of groundwater and water first from the surface of the pressure aquifers. The greatest extent of seawater intrusion was recorded in the areas composed in the upper part of the geological section by dispersed highly permeable sand, gravel and pebble deposits, or highly fractured rocks.
- Добавил в систему: Миронюк Сергей Григорьевич