Analysis of converted shear-waves based on OBS data in the South Yellow Sea and its geological implications

doi:10.6038/cjg20170421

	Analysis of converted shear-waves based on OBS data in the South Yellow Sea and its geological implications
	Zhao Wei-Na 1,2,3; Zhang Xun-Hua 2,4; Meng Xiang-Jun 2,3,5; Wu Zhi-Qiang 2,3,5; Qi Jiang-Hao 2,3,5; Hao Tian-Yao 6; Zheng Yon-Peng 7
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2017-04
卷号	60 期号:4 页码:1479-1490
关键词	OBS Converted S-wave South Yellow Sea V-P/V-S
ISSN号	0001-5733
DOI	10.6038/cjg20170421
英文摘要	Multi-component seismic exploration can reduce the multi-solutions of geophysical inversion. Meanwhile it is able to reveal more abundant underground information. Multi component seismic exploration can realize lithologic exploration from a quantitative perspective. S-waves are rarely involved in the study of crust structure in the South Yellow Sea (SYS) for the complexity of the crust structure and the particularity of converted shear waves. With analysis of travel time of OBS data from SYS, this work did ray tracing and fitting to apparent velocity and particle trajectory between P-component and inline component, the transformation phases from crust and sediments based on the known P-wave velocity model. The results show that only PPS mode, whose surface is the continental deposit bottom interface, appears in the North Depression (ND) of the SYS. Both PPS mode and PSS modes are present in the Qianliyan Uplift (QU) and have significant differences in velocity. High V-p/V-s ratios caused by rock breaking as a result of the fault activity are another piece of evidence regarding to the boundary of the Jiaolai Basin in the SYS. The high velocity layer in the QU mainly comprise metamorphic granite with probable rich silicon, whose ratios range from 1.67 similar to 1.68. The V-p/V-s ratios of the marine sedimentary layer display the characteristics of carbonate rock in the ND. However, the sediment beneath the continental deposit layer is most likely composed of sandstone in the southeast of the ND.
WOS关键词	OCEAN-BOTTOM SEISMOMETERS ; VELOCITY STRUCTURE ; CONTINENTAL-MARGIN ; POISSONS RATIO ; CHINA SEA ; CRUSTAL ; INVERSION ; IDENTIFICATION ; SEDIMENTS ; NORWAY
WOS研究方向	Geochemistry & Geophysics
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000399967500021
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25345]
专题	自然资源部第一海洋研究所
通讯作者	Wu Zhi-Qiang
作者单位	1.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China 3.Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China 4.China Geol Survey, Nanjing Ctr, Nanjing 210016, Jiangsu, Peoples R China 5.Minist Land & Resources, Key Lab Marine Hydrocarbon Resource & Environm Ge, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 7.State Ocean Adm, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Zhao Wei-Na,Zhang Xun-Hua,Meng Xiang-Jun,et al. Analysis of converted shear-waves based on OBS data in the South Yellow Sea and its geological implications[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(4):1479-1490.
APA	Zhao Wei-Na.,Zhang Xun-Hua.,Meng Xiang-Jun.,Wu Zhi-Qiang.,Qi Jiang-Hao.,...&Zheng Yon-Peng.(2017).Analysis of converted shear-waves based on OBS data in the South Yellow Sea and its geological implications.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(4),1479-1490.
MLA	Zhao Wei-Na,et al."Analysis of converted shear-waves based on OBS data in the South Yellow Sea and its geological implications".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.4(2017):1479-1490.