Abstract—Since 2009, the stress-strain state (SSS) of the Earth’s crust in Southern California has been monitored using geomechanical modeling that allows for current seismicity parameters in the region. Based on the calculations of the parameter reflecting the degree of closeness of the geological medium to the limiting stress, the regularities of its spatiotemporal distribution before strong seismic events (M > 7) that occurred in Southern California in 2010 and 2019 are established. The SSS anomalies are revealed at a distance of 10–30 km from the source of the future earthquake a few months before the event.
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The studies on monitoring the stress-strain state in Southern California using the geomechanical model and current seismicity is conducted by the team of IPE RAS and AEROCOSMOS Research Institute under the state-budget-funded research projects nos. AAAA-A19-119081390037-2, AAAA-A17-117061950051-8, and AAAA-A17-117051110248-3.
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Bondur, V.G., Gokhberg, M.B., Garagash, I.A. et al. Stress State Dynamics in Southern California from Geomechanical Monitoring Data before the М = 7.1 Earthquake of July 6, 2019. Izv., Phys. Solid Earth 57, 1–19 (2021). https://doi.org/10.1134/S106935132101002X
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DOI: https://doi.org/10.1134/S106935132101002X