气候变化领域集成服务门户(CCPortal): Dynamic responses of the Xianshuihe and Longmenshan fault zones to regional tectonic loading

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DOI	10.6038/cjg20160421
	Dynamic responses of the Xianshuihe and Longmenshan fault zones to regional tectonic loading
	Wang Xiao-Fang; Xiao Jie; Xu He-Hua; He Jian-Kun
通讯作者	Wang, XF (通讯作者)
发表日期	2016
ISSN	0001-5733
起始页码	1403
结束页码	1413
卷号	59 期号:4
英文摘要	In order to study the trigger interaction; between the Wenchuan earthquake and the earthquakes on the Xianshuihe fault zone as well as the stress changing with the effect of regional tectonic loading, we have studied the seven major earthquakes in the Xianshuihe and Longmenshan fault zones. The regional tectonic loading is approximated by velocity boundaries from GPS data. The split-node technique was used to simulate the earthquakes in upper crust. With the three-dimensional viscoelastic finite element code we simulated the evolution of Coulomb stress. The results show that the trigger interaction between the Wenchuan earthquake and the earthquakes on Xianshuihe fault zone is different. The trigger interaction is obvious on the Xianshuihe fault zone (except the Litang earthquake in 1948 and the Luhuo earthquake in 1973), as 17 to 38 percentages' Coulomb stress increasing was caused by regional tectonic loading, other 49 to 67 percentages of stress was contributed by earthquake deformation. However, part of the Coulomb stress was released by the earthquakes that happened from 1893 to 1981. So it is impossible that the Wenchuan earthquake was triggered by the earthquakes in the past. The Coulomb stress in the Wenchuan earthquake was mainly increased from regional tectonic loading. With occurrence of this earthquake, the certain region released almost all the Coulomb stress and became into a new condition.
关键词	WENCHUAN EARTHQUAKE STRESS CHANGES COULOMB STRESS EVOLUTION SICHUAN HAZARD SYSTEM CHINA
英文关键词	Wenchuan earthquake; Longmenshan fault zone; Xianshuihe fault zone; Coulomb failure stress; Finite element modeling
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000373864400021
来源期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258637
推荐引用方式 GB/T 7714	Wang Xiao-Fang,Xiao Jie,Xu He-Hua,et al. Dynamic responses of the Xianshuihe and Longmenshan fault zones to regional tectonic loading[J]. 中国科学院青藏高原研究所,2016,59(4).
APA	Wang Xiao-Fang,Xiao Jie,Xu He-Hua,&He Jian-Kun.(2016).Dynamic responses of the Xianshuihe and Longmenshan fault zones to regional tectonic loading.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(4).
MLA	Wang Xiao-Fang,et al."Dynamic responses of the Xianshuihe and Longmenshan fault zones to regional tectonic loading".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.4(2016).