Analysis of the Ural Earthquake of September 4, 2018, Based on the Seismic Entropy Method

Abstract

The study examines the preparation of the recent Ural earthquake of September 4, 2018, using the seismic entropy method. Based on the hierarchy of seismic systems, specific features of the occurrence of weak but perceptible earthquakes in intraplate zones are analyzed, and a classification of such seismic systems is given at an energetically lower level. The technology makes it possible to interpret unusual seismicity in the past, to identify the dynamics of slow accumulation and release of stresses over tens and hundreds of years, and to assess the possibility of a stronger earthquake in the future. The conditions for the occurrence of a perceptible earthquake in the area of the Beloyarsk nuclear power plant have been quantitatively studied. It is shown that the seismotectonic features of structures in the Urals cannot lead to preparation of a strong destructive earthquake, but monitoring the occurrence of weak but perceptible earthquakes is important for preventing possible man-made and environmental disasters at industrial facilities and nuclear power plants.