| Global test of seismic static stress triggering model |
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| 作者姓名： | 万永革 吴忠良 周公威 黄静 秦立新 |
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| 作者单位： | WAN Yong-ge1，2) WU Zhong-liang1) ZHOU Gong-wei1) HUANG Jing1) QIN Li-xin1) 1) Institute of Geophysics，China Seismological Bureau，Beijing 100081，China 2) College of Disaster Prevention and Mitigation Technique，China Seismological Bureau，Yanjiao 10 |
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| 基金项目： | Joint Seismological Science Foundation of China (602005). |
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| 摘 要： | Introduction Whether static stress change generated by earthquakes can trigger subsequent earthquakes heretofore is still in debate. Some researchers believe that seismic Coulomb failure stress change generated by earthquake can affect the seismicity nearby (King, et al, 1994; Toda, et al, 1998; Stein, 1999; Seeber, Armbruster, 2000). However, some researchers believe that this model is wrong. For example, Beroza and Zoback (1993) found that stress change generated by the 1989 Loma Prieta …
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| 收稿时间： | 10 January 2001 |
| 修稿时间： | 15 April 2002 |
Global test of seismic static stress triggering model |
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| Wan Yong-ge , Wu Zhong-liang , Zhou Gong-wei , Huang Jing and Qin Li-xin.Global test of seismic static stress triggering model[J].Acta Seismologica Sinica(English Edition),2002,15(3):318-332. |
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| Authors: | Wan Yong-ge Wu Zhong-liang Zhou Gong-wei Huang Jing and Qin Li-xin |
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| Institution: | 1. Institute of Geophysics, China Seismological Bureau, Beijing 100081, China;College of Disaster Prevention and Mitigation Technique, China Seismological Bureau, Yanjiao 101601, China
2. Institute of Geophysics, China Seismological Bureau, Beijing 100081, China |
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| Abstract: | Seismic static stress triggering model is tested using Harvard centroid moment tensor (CMT) solution catalogue of 1976~2000 and concept of earthquake doublet. Result shows that seismic static stress triggering effect does exist in the view of global earthquakes, but the effect is very weak. Dividing the earthquakes into thrust focal mechanism, normal focal mechanism, strike-slip focal mechanism, we find that non-strike-slip focal mechanism earthquakes have significant triggering effect, whereas, the triggering effect in strike-slip focal mechanism earthquakes is not obvious. Divided the subsequent events delay time of earthquake doublet into 5 classes of t1, t<1, t10, t<10, 1t10 (t is in unit of d), then seismic static stress triggering effect does not change with delay time in short time period after earthquakes. The research on seismic static stress triggering in different regions of the world indicates that triggering effect is significant in subduction belts. Seismic static stress triggering model is tested by using earthquake doublets in China and its adjacent region. The result indicates that seismic static stress triggering effect cannot be observed easily in China and its adjacent region due to the seismic focal mechanism type (most of the earthquakes are strike-slip earthquakes). |
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| Keywords: | stress triggering global test seismic catalogue focal mechanism type |
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