Space-time heterogeneity in aftershock activity

被引：15
作者：
Ogata, Yosihiko [1 ]
机构：
[1] Inst Stat Math, Tachikawa, Tokyo 1908562, Japan
来源：
GEOPHYSICAL JOURNAL INTERNATIONAL | 2010年 / 181卷 / 03期
基金：
日本学术振兴会;
关键词：
Earthquake interaction; forecasting; and prediction; Seismicity and tectonics; Statistical seismology; Rheology and friction of fault zones; LARGE EARTHQUAKES; STRESS SHADOWS; OMORI FORMULA; JAPAN; PROBABILITY; SEISMICITY; PARAMETERS; MODELS; FAULT; LAW;
D O I：
10.1111/j.1365-246X.2010.04542.x
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
P>For a number of aftershock sequences in and around Japan, we examine detrended space-time coordinates after fitting the Omori-Utsu occurrence rate to each aftershock sequence. The case studies in conjunction with the fault locations and orientations of the main shocks and focal large aftershocks indicate that the region of deficit and surplus in the aftershock activity well corresponds to the decreased and increased region of Coulomb failure stress, respectively, caused by various aseismic slips. We illustrate the relation between the transient stress changes and the anomalous aftershock activity in a local subregion by six scenarios derived from the rate and state dependent friction law of Dietrich.
引用
收藏
页码：1575 / 1592
页数：18
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