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Volume 56 Supplement 12

Special Issue: Slip and Flow Processes in and below the Seismogenic Region (2)

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What controls the occurrence of shallow intraplate earthquakes?

Earth, Planets and Space volume 56, pages 1077–1086 (2004)Cite this article

Abstract

We simulated the occurrence of both intraplate and interplate earthquakes in a simple spring-slider-dashpot model that includes both types of earthquake faults. We found that recurrence intervals of intraplate earthquakes are not controlled by the velocity of the relative plate motion but by the viscosity in the ductile fault zone, the coefficients of friction of both the interplate and intraplate earthquake faults, and the stress drop of intraplate earthquakes, when the stress drop of intraplate earthquakes is assumed to be only a small part of the total shear stress. These findings may open new avenues for the physics-based long-term forecasting of intraplate earthquakes.

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Authors and Affiliations

  1. Research Center for Earthquake Prediction, Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, 611-0011, Japan

    Yoshihisa Iio

  2. Research Center for Seismology, Volcanology and Disaster Mitigation, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan

    Takeshi Sagiya

  3. Institute for Geoscience, University of Tsukuba, Tsukuba, Ibaragi, 305-0006, Japan

    Yoji Kobayashi

Authors
  1. Yoshihisa Iio
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  2. Takeshi Sagiya
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  3. Yoji Kobayashi
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Correspondence to Yoshihisa Iio.

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Iio, Y., Sagiya, T. & Kobayashi, Y. What controls the occurrence of shallow intraplate earthquakes?. Earth Planet Sp 56, 1077–1086 (2004). https://doi.org/10.1186/BF03353326

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  • DOI: https://doi.org/10.1186/BF03353326

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