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The failed technogenic earthquake of September 30 (29), 2017, in Stebnyk and the natural seimotectonic activity of the area
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 17th International Conference on Geoinformatics - Theoretical and Applied Aspects, May 2018, Volume 2018, p.1 - 5
Abstract
The modern seismic activation of the Boryslav — Stebnyk area (2014–2017) was traced, the spatial localization of local earthquake foci is specified. The directions of breaking of ruptures in the foci of the stronger of them are investigated, the lengths of ruptures and other parameters of these foci are estimated. On the results of a join analysis of seismicity and geological-geophysical data it is define, that most of the earthquake foci tend to transverse faults of anticarpatian (northeast) direction (in the zones of their intersection with the Pre-Carpathian deep fault), which cross or limit the oil-bearing structures, some of them tend to the existing here nappes and folds of different depth. Considering the long-term (since the 19th century) active production in the Boryslav area of oil and gas condensate, as well as potash fertilizers in Stebnyk, the local seismicity is evidently partly additionally technogenically provoked (induced). Seismic events in the area of the No. 2 mine of Stebnyk potash deposit are identified as the karst-failure technogenic earthquakes in the mining zone of this mine.