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Hydrodynamic regime of cave lakes and seismicity of Podillya (Ukraine)
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 17th International Conference on Geoinformatics - Theoretical and Applied Aspects, May 2018, Volume 2018, p.1 - 6
Abstract
Summary
The paper is devoted to the analysis of the series of water level monitoring observations in the Neogene gypsum startum of Podillya and to identification of the main factors determining the hydrodynamic regime of lakes in the caves of Mlynky and Ozerna. An attempt has been made to establish a connection between fluctuations in underground water levels with meteorological conditions on the surface and modern seismic activity.
For this purpose, the mathematical simulation of underground water level fluctuations was performed utilizing average daily air temperatures and precipitation, with subsequent comparison with the data of regime observations of water levels in cave lakes. Mapping of modern local earthquakes against the background of neotectonic activity and their spatial and temporal analysis was done.
The correlation of the simulated water level with actual measurements in the caves of Mlynky and Ozerna in the period from 2006 to 2014 and the difference in the period 2015–2017 is established. It was shown that a series of local earthquakes in 2012–2014 at the area of Mykulyntsi-Ternopil morphostructural-neotectonic node could have caused falling water content in the Neogene gypsum aquifer of Podillya in 2015–2017, as the seismic activity provoked opening of fractures in rocks and the absorption of water.
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