Earth, Planets and Space

, Volume 56, Issue 12, pp 1077–1086 | Cite as

What controls the occurrence of shallow intraplate earthquakes?

Open Access
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.

Key words

Intraplate earthquake lower crust recurrence interval ductile fault zone 

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Copyright information

© The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences. 2004

Authors and Affiliations

  1. 1.Research Center for Earthquake Prediction, Disaster Prevention Research InstituteKyoto UniversityUjiJapan
  2. 2.Research Center for Seismology, Volcanology and Disaster MitigationNagoya UniversityNagoyaJapan
  3. 3.Institute for GeoscienceUniversity of TsukubaTsukuba, IbaragiJapan

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