THE ROLE OF HYDROGEOCHEMICAL FACTORS IN KARST PROCESSES ON THE TERRITORY OF RIVNE NPP
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2014, Vol 19, Issue 4
Abstract
The purpose of the research is to identify the complex impact of hydrogeochemical factors to karst processes and estimation of its magnitude.Methodology. Methods of non-parametric Spearman rank correlation coefficient and multiple linear regression were applied for data processing and statistical connection searching.Finding. The availability of statistically significant reverse connection between Ca2+ in the groundwater of Upper Cretaceous aquifer and values of hydraulic conductivity and temperature were established after the data estimation as well as direct connection between Ca2+ in research aquifer and its pH values. Results. The results of the research can be interpreted as follows. Statistically significant reverse relationship between Ca2+ in research aquifer and values of hydraulic conductivity exists because of slow groundwater movement and prolonged contacting with water-bearing rocks. As follows, much more Ca2+ migrate to groundwater. Availability of significant reverse connection between Ca2+ in the groundwater of Upper Cretaceous aquifer and its temperature can be explained through: a) ability of carbon dioxide to dissolve faster in cold water and to transform carbonates to bicarbonates, b) possible divergence from regional trend, c) lack of data and small research area.The direct correlation between Ca2+ in research groundwater and pH values indicates that bicarbonates, formed by the interaction carbonate rocks with groundwater, dissociate into Са2+ and НСО3-, thereby preventing СаСО3 forming and carbon dioxide releasing. As a result the environment changes from acidic to alkaline.Considering all of the above we can conclude, that hydrochemical, temperature and hydraulic factors enhance the carbonates dissolution and therefore karst processes.
Authors and Affiliations
A. S. Brovko, O. O. Kharchenko
Keywords
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