Earth Tides Can Trigger Shallow Thrust Fault Earthquakes

  • Elizabeth S. Cochran
    Department of Earth and Space Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095, USA.
  • John E. Vidale
    Department of Earth and Space Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095, USA.
  • Sachiko Tanaka
    Department of Earth and Space Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095, USA.

書誌事項

公開日
2004-11-12
DOI
  • 10.1126/science.1103961
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p>We show a correlation between the occurrence of shallow thrust earthquakes and the occurrence of the strongest tides. The rate of earthquakes varies from the background rate by a factor of 3 with the tidal stress. The highest correlation is found when we assume a coefficient of friction of μ = 0.4 for the crust, although we see good correlation for μ between 0.2 and 0.6. Our results quantify the effect of applied stress on earthquake triggering, a key factor in understanding earthquake nucleation and cascades whereby one earthquake triggers others.</jats:p>

収録刊行物

  • Science

    Science 306 (5699), 1164-1166, 2004-11-12

    American Association for the Advancement of Science (AAAS)

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