New Approach to Monitoring Induced Earthquakes
V. V. ADUSHKIN1,2, S. B. KISHKINA1, G. G. KOCHARYAN1,2
1Institute of Geosphere Dynamics, Russian Academy of Sciences, Leninskii pr. 38, Moscow, 119334 Russia
2Moscow Physico-Technical Institute, Institutskii per. 9, Dolgoprudny, 141700 Russia
Keywords: индуцированная сейсмичность, техногенные землетрясения, жесткость разломов, сейсмическая энергия, сейсмический момент, разломные зоны, мониторинг, induced seismicity, induced earthquakes, fault rigidity, seismic energy, seismic moment, fault zones, monitoring
Abstract
The generalized observations over hypocenters of the strongest mining-induced events have shown that this type of deformation occurs as movement along the existing faults. From the experimental evidence, transition of a section of a fault to meta-stable state goes with the decrease of its dynamic shearing rigidity. The alteration of the mechanical properties starts long before macroscopic movement of the fault surfaces is recorded. This effect is detectable using instruments and can be used as a foundation for a new approach to monitoring of induced earthquakes.
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