印尼MS8.7地震对中国大陆3次后续中强地震的动应力触发研究

Abstract

Abstract: In two months after Indonesia M_S8.7 earthquake, three moderately strong earthquakes (December 26, 2004 M_S5.1 Shuangbai earthquake, January 26, 2005 M_S5.1 Simao earthquake and February 15, 2005 M_S6.2 Wushi earthquake) occurred in China' mainland. Is there triggering relation between Indonesia M_S8.7 Earthquake and the three subsequent earthquakes? In this article we calculate the static and dynamic Coulomb stress changes in failure planes of the three subsequent earthquakes for Indonesia M_S8.7 Earthquake. The value of static stress change is smaller than the threshold one of triggering value (0.01 MPa);The peak change of dynamic stress is about 10^-1 MPa. So the change of dynamic stress is probably the triggering factor of the three subsequent earthquakes.

Key words: Dynamic stress triggering, Coulomb failure stress, Indonesia M_S8.7 Earthquake

CLC Number:

P315.7

HAO Ping, LIU Jie, HAN Zhu-jun, FU Zheng-xiang. Dynamic stress triggering of three subsequent moderately strong earthquakes in China's mainland following the Indonesia M_S8.7 Earthquake[J]. EARTHQUAKE, 2006, 26(3): 26-36.

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Dynamic stress triggering of three subsequent moderately strong earthquakes in China's mainland following the Indonesia M_S8.7 Earthquake

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Dynamic stress triggering of three subsequent moderately strong earthquakes in China's mainland following the Indonesia MS8.7 Earthquake

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Dynamic stress triggering of three subsequent moderately strong earthquakes in China's mainland following the Indonesia M_S8.7 Earthquake