Peculiarities of explosive seismicity in the territory of the Republic of Karelia for 2017-2018

Abstract

The features of explosive seismicity on the territory of the Republic of Karelia were studied using seismic data for 2017–2018. About 30 quarries are currently operating in the region. Blasting operations are carried out in the daytime with explosive charges ranging from 10–1000 tons. All large explosions are dispersed and carried out with a short deceleration. According to the results of seismic signal processing, «zones» of technogenic seismicity are highlighted. The waveforms of the records are given. Spectral analysis was used to identify man-made events on seismic records in selected “zones”. The dependence of the amplitude of the spectra of events on the distance to the seismic station and their numerical characteristics are shown. The magnitudes of seismic events from explosions vary in the range of 1–2,5.