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oa Long-term fluctuations in the chemical composition of surface waters and climate change
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, XIV International Scientific Conference “Monitoring of Geological Processes and Ecological Condition of the Environment”, Nov 2020, Volume 2020, p.1 - 5
Abstract
The aim of the study was to identify trends in long-term changes in the chemical composition of river waters using the example of river basins in Ukraine and their possible relationship with climate change. We used long-term observational data on the chemical composition of water (main ions and mineralization) of the Western Bug (1961–2018) and Southern Bug (1951–2018) rivers. Three characteristic periods are distinguished for these rivers: the first period is reference; the second period is transformational, characterized by a process of increasing water mineralization; the third period is modern, characterized by a process of certain stabilization of the hydrochemical regime of rivers. As a result of climate change, the share of underground river nutrition is increasing. It is known that groundwater has a higher mineralization, which leads to an increase in the mineralization of river water.