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学科主题: Geochemistry & Geophysics
题名: Numerical modeling of the current tectonic stress field in Taiwan strait and its adjacent regions
作者: Yang, XQ ; Shi, XB ; Xu, HH
通讯作者: yzy2081@scsio.ac.cn
关键词: Taiwan Strait ; Tectonic stress field ; Numerical modeling ; GPS velocity field ; Focal mechanism solution (FMS)
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
发表日期: 2012
卷: 55, 期:7, 页:2307-2318
部门归属: [Yang Xiao-Qiu; Shi Xiao-Bin; Xu He-Hua] Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
项目归属: 海洋地质
摘要: This paper presents the current tectonic stress field in the Taiwan Strait and its adjacent regions, which was calculated with a 3D finite element model based on the elastic theory. When doing so, we divided the study area into several sub-regions which had same thickness but were assigned different elastic parameters, and the model was constrained by GPS observed velocity data and the directions of principal stress axes deduced from focal mechanism solutions (FMS). The results show that: (1) The direction of the maximum principal stress is about NW-SE in the centers of the Taiwan Strait and Taiwan mountain belt, and experiences clockwise rotation in the northeastern part, and anticlockwise rotation in the southern part, respectively. (2) The horizontal displacement field can be divided into two areas by the Latitude 23 degrees N and it is much stronger in the southern area than in the northern one. In the northern area, the displacement field shows clockwise rotation, while it shows anticlockwise rotation in the southern area. (3) The Dongsha-Penghu-Peikang Basement High becomes a barrier because it is stronger than surrounding regions. As a result, there are two tectonic escapes in the north and the south of the High. And the deformation is much stronger in the southeastern part of the High than its northwestern part.
语种: 中文
WOS记录号: WOS:000307155400016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10329
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Yang, XQ; Shi, XB; Xu, HH.Numerical modeling of the current tectonic stress field in Taiwan strait and its adjacent regions,CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(7):2307-2318
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