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Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea
Zhao, MH; Qiu, XL; Ye, CM; Xia, KY; Huang, CL; Xie, JB; Wang, P; mhzhao@scsio.ac.cn
2004
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
卷号47期号:5页码:845-852
摘要The onshore-offshore deep seismic experiment was carried out for the first time and filled the blankness of the seismic surveys in the transition area between South China and northeastern South China Sea. The seismic data were analyzed and processed. The different seismic phases were identified and their travel time arrivals were modeled by ray-tracing to study the P-wave velocity crustal structure of this area. The crustal structure of this area is the continental crust. The crust thickness is gradually decreasing southward along the on-shore-offshore seismic line. The low-velocity layer (5.5 similar to 5.9 km (.) s(-1)) exists generally in the middle crust (about 10.0 similar to 18.0km)with about 2.5 similar to 4.0 km thickness, which is also thinning seaward. No obvious high-velocity layer appears in the lower crust. The Binhai (littoral) fault zone is a low velocity zone, which is located about 35km southeast to the Nan'ao station and corresponding to the gradient belt of gravity & magnetism anomalies. The depth of the fault zone is close to the Moho discontinuity. The littoral fault zone is a boundary between the normal continental crust of South China and the thinned continental crust of the sea area.
部门归属Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China; Chinese Acad Sci, Lab Marginal Sea Geol, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
关键词Northeastern South China Sea Onshore-offshore Deep Seismic Experiment Binhai(Littoral) Fault Zone Crustal Structure Low-velocity Layer
学科领域Geochemistry & Geophysics
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000224170000016
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被引频次:34[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4782
专题中科院边缘海地质重点实验室
通讯作者mhzhao@scsio.ac.cn
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Zhao, MH,Qiu, XL,Ye, CM,et al. Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2004,47(5):845-852.
APA Zhao, MH.,Qiu, XL.,Ye, CM.,Xia, KY.,Huang, CL.,...&mhzhao@scsio.ac.cn.(2004).Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,47(5),845-852.
MLA Zhao, MH,et al."Analysis on deep crustal structure along the onshore-offshore seismic profile across the Binhai (littoral) fault zone in northeastern South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 47.5(2004):845-852.
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