Rupture process and Coulomb stress change of the M(W)8. 3 earthquake and the M(W)8. 8 earthquake, Chile

doi:10.6038/cjg20170715

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Rupture process and Coulomb stress change of the M(W)8. 3 earthquake and the M(W)8. 8 earthquake, Chile
	Lin Xin 1,2; Hao Jin-Lai 2; Yao Zhen-Xing 2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2017-07-01
卷号	60 期号:7 页码:2680-2692
关键词	Illapel earthquake, Chile Maule earthquake, Chile Finite-fault model Waveform inversion Rupture process of source Static Coulomb stress change
ISSN号	0001-5733
DOI	10.6038/cjg20170715
文献子类	Article
英文摘要	On 17 September 2015 (Beijing Time), a great (M(W)8. 3) earthquake ruptured offshore Illapel (31. 57 degrees S,71. 67 degrees W),central Chile, and a M(W)8. 8 earthquake occurred in Maule (36. 12 degrees S, 72. 90 degrees W) on 27 February, 2010 which ruptured about 500 km to the south of the 2015 Illapel earthquake, it is a remarkable fact that a seismic gap about 75 km between two aftershocks zones for the two events. The rupture processes of the two events are investigated by finite fault model using far field broadband body waves and surface waves records. The results indicate that two events are thrust earthquakes, the average rake, average slip, rupture duration, average rupture velocity and moment tensor for the 2015 Illapel earthquake are 107 degrees, 2. 43 m, 104 s, 1. 82 km . s(-1) and 3. 28 X 10(21)Nm, respectively, and with a peak slip of 8 m which located in 75 km (along strike) and 8 km in depth; the average rake, average slip, rupture duration, average rupture velocity and moment tensor for the 2010 Maule earthquake are 109 degrees,4. 95 m, 121 s, 1. 90 km . s(-1) and 1. 86X 10(22)Nm, respectively, and with a peak slip of 12. 5 m which located in 100 km (along strike) and 21 km in depth. The 2015 Illapel M(W)8. 3 earthquake generates a larger tsunami, on account of the larger shallow slip. Based on the rupture distribution, we calculate the static Coulomb stress change for the two events and shows that both of them makes an increase in the average stress, furthermore, the increased stress in source region of the 2015 Illapel earthquake caused by the 2010 Maule event is (0. 01 similar to 0. 15) X10(5) Pa, that may indicate a promotion from the 2010 Maule earthquake leading to the 2015 M(W)8. 3 Illapel earthquake.
WOS关键词	SEPTEMBER 2015 ILLAPEL ; M-W ; SUBDUCTION ZONE ; MOTION ; CALIFORNIA ; MECHANISM ; INVERSION ; HISTORY ; GPS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000405160100015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/46061]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Lin Xin
作者单位	1.Huazhong Univ Sci & Technol, Inst Geophys, Sch Phys, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Lin Xin,Hao Jin-Lai,Yao Zhen-Xing. Rupture process and Coulomb stress change of the M(W)8. 3 earthquake and the M(W)8. 8 earthquake, Chile[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(7):2680-2692.
APA	Lin Xin,Hao Jin-Lai,&Yao Zhen-Xing.(2017).Rupture process and Coulomb stress change of the M(W)8. 3 earthquake and the M(W)8. 8 earthquake, Chile.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(7),2680-2692.
MLA	Lin Xin,et al."Rupture process and Coulomb stress change of the M(W)8. 3 earthquake and the M(W)8. 8 earthquake, Chile".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.7(2017):2680-2692.