Analysis of the nature of a seismic event in Berezniki on January 7, 2025

Abstract

The area of the Verkhnekamskoye deposit is characterized by an abnormally high technogenic load on the subsoil which inevitably leads to the activation of tectonic processes. One of their manifestations was a microearthquake with magnitude M_L=2.5 on January 7, 2025 which became the largest in this region since the beginning of the 21st century. The article describes approaches to clarifying the coordinates of its epicenter and the depth of the source. The seismograms are compared with other seismic events of known origin. It is concluded that this microearthquake is of tectonic origin and is associated with the buried reef structure, despite its similarity in plan to the mine workings of one of the mines.