Stress State Dynamics in Southern California from Geomechanical Monitoring Data before the М = 7.1 Earthquake of July 6, 2019

V. G. Bondur, M. B. Gokhberg, I. A. Garagash, D. A. Alekseev

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
JournalIzvestiya, Physics of the Solid Earth
Volume57
Issue number1
DOIs
Publication statusPublished - Jan 2021
Externally publishedYes

Keywords

  • earthquake prone areas
  • earthquakes
  • Earth’s crust
  • geomechanical model
  • monitoring
  • precursors
  • Southern California
  • stress-strain state

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