New Opportunities for Epicentral Seismic Observations

Abstract

This study considers the hardware and methodological possibilities for increasing the information content of seismological observations in the epicentral zone of a platform earthquake without obvious surface manifestations. It is shown that the microseismic background analysis conducted during the installation of several seismic stations is efficient for both identifying the source location and refining the geodynamic features of the environment in the epicentral zone. The results of the coherent-time analysis of recordings at the three-component registration made to identify endogenous microcracks hidden by microseismic noise are presented. Their power, number, and azimuths are calculated. The possibility of using an autostructural function for the time series of a stream of micropulses at long-term recording of microseisms is shown to identify the self-organization of crustal blocks by similarities in their geodynamics. The requirements for the seismic equipment necessary for the observations are discussed.