Heterogeneity in a self-organized critical earthquake model

被引：25

作者：

Steacy, SJ ^{[1
]}

McCloskey, J ^{[1
]}

Bean, CJ ^{[1
]}

Ren, JW ^{[1
]}

机构：

[1] NATL UNIV IRELAND UNIV COLL DUBLIN,DEPT GEOL,DUBLIN 4,IRELAND

来源：

GEOPHYSICAL RESEARCH LETTERS | 1996年 / 23卷 / 04期

关键词：

D O I：

10.1029/96GL00257

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Earthquake dynamics are believed to exhibit self-organized criticality. This belief results from the power-law magnitude frequency distributions of earthquake catalogues, distributions which are accurately reproduced by cellular automata, and from the occurrence of triggered earthquakes. This paper examines the effects of heterogeneity on self-organized criticality in a two-dimensional cellular automaton. The strength heterogeneity is distributed fractally; stress is incremented uniformly. The model produces power-law magnitude frequency distributions. For fractal dimensions above 1.9, the slope of the power-law decreases with increasing fractal dimension. The slope increases weakly with the range of heterogeneity.

引用

页码：383 / 386

页数：4

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