The research presents preliminary studies of seismicity in region of Dnister upper reservoir and confirms the assumption of (Savchyn & Pronyshchyn, 2020) study that claims that the Dnister Hydro Power Complex can be considered as one of the objects where the phenomenon of reservoir induced seismicity has been recorded. Specially installed seismic station «Novodnistrovsk» recorded 956 earthquakes from 2012 to 2021, but only 40 earthquakes are reliably recorded by three or more seismic stations. The earthquakes occur in the contact of structures of different lithological composition at a depth of 1-3 km close to Dnister upper reservoir. Therefore, friction between the structures occur and the corresponding release of energy precisely in the contact zone of the two structures is observed. We calculate the volume changes in the reservoir based on the OpenTopoMap Model in QGIS software and the known changes in the water level from 2012 to 2021 year. The Pearson correlation coefficient between the reservoir absolute volume change and the total seismicity determined through the energy class is 0.64. Further research can be devoted to the search for a functional interrelationship between the parameters, dividing the studied data into equal periods. Similar studies can be carried out at different reservoirs, which have different geological structures.
Brusak, I., & Tretyak, K. (2021) On the impact of non-tidal atmospheric loading on the GNSS stations of regional networks and engineering facilities. International Conference of Young Professionals, GeoTerrace 2021. DOI: 10.3997/2214-4609.20215K3013
Bubniak, A., Bubniak, I., & Zyhar, A. (2020). Lineaments analysis of the Dnister area (between Bakota and Novodnistrovsk). Geoinformatics: Theoretical and Applied Aspects 2020. DOI: 10.3997/2214-4609.2020geo110
Savchyn, I., & Pronyshyn, R. (2020) Differentiation of recent local geodynamic and seismic processes of technogenic-loaded territories based on the example of Dnister Hydro Power Complex (Ukraine). Geodesy and Geodynamics, 11 (5), 391-400. DOI: 10.1016/j.geog.2020.06.001
Sarnavski, V., & Ovsiannikov, M. (2005) Tectonic structure and geodynamic mode of rock masses in the zone of interaction with hydromechanical structures of HPP and PSPP (on the example of the Dnister complex hydro unit) Modern Achv. geodetic Sci. Prod., 2, pp. 193-206 (in Ukrainian)
State geological map of Ukraine on scale of 1:200,000 sheets M-35-XXVIII (Bar), M-35-XXXIV (Mohyliv-Podilskyi (within Ukraine) (2007). Ministry of Environmental Protection of Ukraine, State Geological Service UkrDGRI. 206 p. (in Ukrainian)
Tretyak, K., Korliatovych, T., Brusak, I. (2021) Applying the statistical method of GNSS time series analysis for the detection of vertical displacements of Dnister HPP-1 dam. International Conference of Young Professionals, GeoTerrace 2021. DOI: 10.3997/2214-4609.20215K3012