Magnitude determination capabilities MD man-made seismic events, caused by industrial explosions on the territory of the Voronezh crystalline massif

Abstract

Introduction: The types of recorded seismic events on the territory of the Voronezh crystalline massif (VCM) are briefly outlined. It is noted that the presented work is a continuation of a series of works devoted to determining the energy characteristics of seismic events that occurred on the territory of the VCM.

Research methodology: The main methods for determining the energy characteristics of seismic events that occurred at regional distances, used in various regions of Russia, are described. The practical significance of determining the magnitude of a seismic event by duration is shown. Various methods for determining the duration of seismic recordings are considered.

Research results and discussion: An extrapolated dependence of the MD magnitude on a recording duration of less than one minute was proposed for the first time. We compared the ratio of MD and MS magnitudes determined for the same event with an epicentral distance of about 7 km. The ratio established between these magnitudes was fairly good, and the difference was less than 0.2 un. М. Using the MD magnitude was not reasonable for remote quarries with simultaneous overlapping of recordings of various nature. It was shown that the MD magnitude could be determined for pulse-type seismic events.

Conclusion: In the geological conditions of the VCM, when processing and interpreting records of pulsed events of unclear nature, not complicated by the imposition of random interference, it is recommended to use the magnitude based on the duration of the MD record to determine the energy characteristics.