Volume 77, Number 6, March 2007
|Number of page(s)||5|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||02 March 2007|
Rate- and state-dependent friction law and statistical properties of earthquakes
Department of Earth and Space Science, Faculty of Science, Osaka University - Toyonaka 560-0043, Japan
Accepted: 2 February 2007
In order to clarify how the statistical properties of earthquakes depend on the constitutive law characterizing the stick-slip dynamics, we make an extensive numerical simulation of the one-dimensional spring-block model with a rate- and state-dependent friction law. Both the magnitude distribution and the recurrence-time distribution are studied with varying the constitutive parameters characterizing the model. While a continuous spectrum of seismic events from smaller to larger magnitudes is obtained, earthquakes described by this model turn out to possess pronounced “characteristic” features.
PACS: 91.30.Ab – Theory and modeling, computational seismology
© Europhysics Letters Association, 2007
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