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Numerical modeling of the current tectonic stress field in Taiwan strait and its adjacent regions
Yang, XQ; Shi, XB; Xu, HH; yzy2081@scsio.ac.cn
2012
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
卷号55期号:7页码:2307-2318
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.
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
关键词Taiwan Strait Tectonic Stress Field Numerical Modeling Gps Velocity Field Focal Mechanism Solution (Fms)
学科领域Geochemistry & Geophysics
语种中文
资助项目海洋地质
WOS记录号WOS:000307155400016
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10329
专题中科院边缘海地质重点实验室
通讯作者yzy2081@scsio.ac.cn
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GB/T 7714
Yang, XQ,Shi, XB,Xu, HH,et al. Numerical modeling of the current tectonic stress field in Taiwan strait and its adjacent regions[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(7):2307-2318.
APA Yang, XQ,Shi, XB,Xu, HH,&yzy2081@scsio.ac.cn.(2012).Numerical modeling of the current tectonic stress field in Taiwan strait and its adjacent regions.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,55(7),2307-2318.
MLA Yang, XQ,et al."Numerical modeling of the current tectonic stress field in Taiwan strait and its adjacent regions".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 55.7(2012):2307-2318.
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