A Multiparametric Approach to Study the Preparation Phase of the 2019 M7.1 Ridgecrest (California, United States) Earthquake

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İnan S.

FRONTIERS IN EARTH SCIENCE, vol.8, pp.1-15, 2020 (Peer-Reviewed Journal)

  • Publication Type: Article / Article
  • Volume: 8
  • Publication Date: 2020
  • Doi Number: 10.3389/feart.2020.540398
  • Journal Indexes: Science Citation Index Expanded, Scopus, Directory of Open Access Journals
  • Page Numbers: pp.1-15


The 2019 M7.1 Ridgecrest earthquake was the strongest one in the last 20 years in

California (United States). In a multiparametric fashion, we collected data from the

lithosphere (seismicity), atmosphere (temperature, water vapor, aerosol, and methane),

and ionosphere (ionospheric parameters from ionosonde, electron density, and magnetic

field data from satellites). We analyzed the data in order to identify possible anomalies that

cannot be explained by the typical physics of each domain of study and can be likely

attributed to the lithosphere-atmosphere-ionosphere coupling (LAIC), due to the

preparation phase of the Ridgecrest earthquake. The results are encouraging showing

a chain of processes that connect the different geolayers before the earthquake, with the

cumulative number of foreshocks and of all other (atmospheric and ionospheric) anomalies

both accelerating in the same way as the mainshock is approaching.