Seismic events in the Sverdlovsk region for the period 1788–2022

Abstract

Introduction. Sverdlovsk region is a major industrial center. There are mining enterprises, chemical plants, reservoirs, and high-capacity power plants. These objects are located close to large settlements. Currently, about 400 seismic events are recorded annually in the region. To ensure the seismic safety of objects of increased responsibility and especially important construction objects, it is necessary to carry out studies on detailed seismic zoning of the territory under consideration. The results of this work are the first stage of these studies. Research theory. For the first time, a consolidated unified catalog of seismic events that occurred on the territory of the Sverdlovsk region was compiled. Historical and instrumental catalog data for the period 1788–2022 and data from instrumental records of local seismic events recorded by temporary, mobile stations of the Institute of Geophysics Ural Branch of the Russian Academy of Sciences (IGF UB RAS) served as the basis. served as the basis. Results. Most of the recorded events are technogenic. Mostly these are industrial explosions and rock burst. These seismic events are recorded in the area of the following cities: Asbest, Ekaterinburg, Revda, Nizhny Tagil, Kushva, Kachkanar, Karpinsk, Severouralsk. Tectonic earthquakes have also been repeatedly recorded in the Sverdlovsk region. Most of them are not felt by people. Earthquakes with a magnitude greater than 4.0 have macroseismic manifestations. The strongest earthquake is 08.17.1914 (MS= 5.0, epicenter coordinates 57.09° N, 59.8° E). The intensity of the earthquake at the epicenter was 6.0 on the MSK-64 scale. The results of this work will serve as a basis for further determination of the parameters of the seismic regime of the study area.