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oa The Average Annual Water Runoff Long-Term Fluctuations Trends of the Dniester Podolia Tributaries
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 17th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, Nov 2023, Volume 2023, p.1 - 5
Abstract
The research was conducted for the small and medium left-bank tributaries of the Dniester within the Ternopil region. Such choice of rivers’ catchments is based on the fact that the above-mentioned influencing factors manifestation is more pronounced for such catchments. The initial data for the assessment of long-term runoff characteristics fluctuations trends were the average annual discharges at 11 hydrological gauges.
Using the linear regression equation, the hydrological gauges observations series were restored to create the time series to a common period for further calculations. It was found that the runoff characteristics of the investigated rivers are in-phase, using the difference integral curves method. It has been established that the modern period is characterized by a tendency to decrease the runoff characteristics value, due to the influence of modern climate changes and economic activity within the river basins.
A common cycle is identified, the left-bank Dniester tributaries’ average annual runoff fluctuations have a regular cyclical nature with the exception of separate tributaries.