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Subject: 地球科学::地质学
Title: Dynamic responses of the Xianshuihe and Longmenshan fault zones to regional tectonic loading
Author: Wang, XF (Wang Xiao-Fang)1; Xiao, J (Xiao Jie)2; Xu, HH (Xu He-Hua)1; He, JK (He Jian-Kun)2
Corresponding Author: Wang, XF
Source: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
Issued Date: 2016
DOI: DOI: 10.6038/cjg20160421
Volume: 59, Issue:4, Pages:1403-1413
Indexed Type: SCI
Cooperation Status: 国内
DOC Type: Article
English Abstract: 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.
Language: 英语
WOS ID: WOS:000373864400021
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Content Type: 期刊论文
URI: http://ir.itpcas.ac.cn/handle/131C11/7721
Appears in Collections:图书馆_期刊论文

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description.institution: 1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China

Recommended Citation:
Wang, XF ,Xiao, J ,Xu, HH ,et al. Dynamic responses of the Xianshuihe and Longmenshan fault zones to regional tectonic loading[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(4):1403-1413.
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