Persistence and quiescence of seismicity on fault systems

被引:10
作者
Lee, MW [1 ]
Sornette, D
Knopoff, L
机构
[1] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA
[4] CNRS, Phys Mat Condensee Lab, F-06108 Nice, France
[5] Univ Nice Sophia Antipolis, F-06108 Nice, France
关键词
D O I
10.1103/PhysRevLett.83.4219
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the statistics of simulated earthquakes in a quasistatic model of two parallel heterogeneous faults within a slowly driven elastic tectonic plate. The probability that one fault remains dormant while the other is active for a time Delta t following the previous activity shift is proportional to Delta t(-(1+x)), a result that is robust in the presence of annealed noise and strength weakening. A mean field theory accounts for the observed dependence of the persistence exponent x as a function of heterogeneity and distance between faults. These results continue to hold if the number of competing faults is increased.
引用
收藏
页码:4219 / 4222
页数:4
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