Vulnerability Assessment of Karst Underground Waters in the Territory of Non-Centralized Water Supply

Autor: R V Romanov, O R Kuzichkin, G S Vasiliev
Rok vydání: 2022
Zdroj: IOP Conference Series: Earth and Environmental Science. 988:042064
ISSN: 1755-1315
1755-1307
Popis: This paper considers an individual approach to assessing the vulnerability of karst groundwater. It is based on the allocation of such indicators as the geological structure of the observed territory, the concentration of runoff entering the karst channels, and the precipitation regime. Due to regional climatic, hydrogeological and landscape features, a private methodology for assessing the vulnerability of karst groundwater has been developed. To assess the vulnerability of sources of non-centralized water supply, a factor is taken into account, including such indicators as lithology, soil thickness, and the presence of a karst base. The most intense karst processes occur on river terraces, valley slopes. For this purpose, a factor is taken into account, including the level of river flow by hydrogeological posts, underground flow, karst craters, tectonic faults, and vegetation. The development of karst is also promoted by high gradients of the underground flow and underground water outlets in riverbeds and coastal slopes. For this purpose, the factor is taken into account, which is formed on the basis of the criterion of the development of the karst network and the hydrographic network. A relatively large amount of precipitation, especially in the form of rain, and low evaporation determine the increased values of surface and underground runoff and, accordingly, the development of dissolution and leaching processes. Among the external factors, the solubility of minerals is significantly affected by the total mineralization and chemical composition of the dissolving waters. As a result of the observations, spatio-temporal dependencies were identified in the controlled territory.
Databáze: OpenAIRE
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