Application of Polarization-Time Model Seismic Signal for Remote Monitoring of Potential Sources Emergencies by Three-Component Seismic Station
The aim of the work is to develop theoretical foundations aimed at improving efficiency of detecting hazard factors related to natural and man-made disasters based on the results a seismic observation. An analysis of seismic monitoring equipment operated by the Main Center for Special Control of State Space Agency of Ukraine and methods of seismic data processing was carried out. Various components of seismic signals from events with epicenters in the regional zone was analyzed. A relationship was established between location of seismic event location relative to seismic observation station and angular characteristics of main seismic signal components for events with regional epicenters. In order to reduce the time of providing preliminary information to users about the fact of a seismic event and its seismic source parameters, it is proposed to move from a search task of determining focal point location to remote monitoring of potential sources of natural and man-made disasters. In order to realize continuous remote monitoring for potential sources of emergency events, a polarization-time model was proposed for expected seismic signal from an event with a focal point in a controlled area (object). Results of applying the proposed approach for detecting seismic signals from earthquakes with foci in the regional zone are presented. Relative simplicity of implementing our approach allows monitoring potential sources an emergency events in a time mode close to real time. Parameters of a polarization-time model of seismic signals for nuclear power plants in Ukraine and hydraulic structures of the Dnipro cascade are presented. At the same time, this work is included in a broader set of studies aimed at improving existing and creating new theoretical foundations for detecting seismic hazards of natural and man-made origin. In addition, this research covers processes of occurrence and propagation of seismic emergencies that may threaten society's vital activity.
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Application of Polarization-Time Model Seismic Signal for Remote Monitoring of Potential Sources Emergencies by Three-Component Seismic Station
Semantic Scholar · Engineering · 2023
Abstract
The aim of the work is to develop theoretical foundations aimed at improving efficiency of detecting hazard factors related to natural and man-made disasters based on the results a seismic observation. An analysis of seismic monitoring equipment operated by the Main Center for Special Control of State Space Agency of Ukraine and methods of seismic data processing was carried out. Various components of seismic signals from events with epicenters in the regional zone was analyzed. A relationship was established between location of seismic event location relative to seismic observation station and angular characteristics of main seismic signal components for events with regional epicenters. In order to reduce the time of providing preliminary information to users about the fact of a seismic event and its seismic source parameters, it is proposed to move from a search task of determining focal point location to remote monitoring of potential sources of natural and man-made disasters. In order to realize continuous remote monitoring for potential sources of emergency events, a polarization-time model was proposed for expected seismic signal from an event with a focal point in a controlled area (object). Results of applying the proposed approach for detecting seismic signals from earthquakes with foci in the regional zone are presented. Relative simplicity of implementing our approach allows monitoring potential sources an emergency events in a time mode close to real time. Parameters of a polarization-time model of seismic signals for nuclear power plants in Ukraine and hydraulic structures of the Dnipro cascade are presented. At the same time, this work is included in a broader set of studies aimed at improving existing and creating new theoretical foundations for detecting seismic hazards of natural and man-made origin. In addition, this research covers processes of occurrence and propagation of seismic emergencies that may threaten society's vital activity.