The crustal structure beneath the Shidao station on Xisha Islands of South China Sea

	The crustal structure beneath the Shidao station on Xisha Islands of South China Sea
	Qiu Xue-Lin ; Zeng Gang-Ping ; Xu Yi ; Hao Tian-Yao ; Li Zhi-Xiong ; Priestley, Keith ; McKenzie, Dan
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2006-11-01
卷号	49 期号:6 页码:1720-1729
关键词	South China Sea Xisha Islands Shidao Station teleseismic receiver function crustal velocity structure
ISSN号	0001-5733
文献子类	Article
英文摘要	We installed a temporary earthquake station at Shidao on Xisha Islands of South China Sea to study the seismicity and lithospheric structure of the region, and carried out the observation experiment for more than one year. Although the seismic data in reef and island areas have relatively large background noise, especially during the passage of a tropical cyclone, earthquakes above M-W 6 can still be recorded. In this paper, those teleseismic records with clear P waveforms are chosen to carry out receiver function analysis and modeling. A simple crustal structure model beneath the station is obtained, in which the Moho depth is 28 km. On the top of the upper crust is a 2 km-thick low velocity layer with a shear wave velocity of only 2.3 km/s. The shear wave velocity increases gradually with depth to 3.8 km/s in the lower crust. We compared this model with previous results and discovered that the models of Shidao Station and Qiongzhong Station (QIZ) are the natural extensions of the Xisha Trough section. The crustal structure of Xisha Block consists of thinned continental crust, with a velocity structure that is similar to the normal continental crust of South China Block.
WOS关键词	TELESEISMIC P-WAVEFORMS ; RECEIVER FUNCTIONS ; PROFILE ; MARGIN ; TROUGH
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000242388600019
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66694]
专题	中国科学院地质与地球物理研究所
通讯作者	Qiu Xue-Lin
作者单位	1.Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Peoples R China 2.Earthquake Adm Hainan Prov, Haikou 570203, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Univ Cambridge, Bullard Labs, Cambridge CB3 0EZ, England
推荐引用方式 GB/T 7714	Qiu Xue-Lin,Zeng Gang-Ping,Xu Yi,et al. The crustal structure beneath the Shidao station on Xisha Islands of South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2006,49(6):1720-1729.
APA	Qiu Xue-Lin.,Zeng Gang-Ping.,Xu Yi.,Hao Tian-Yao.,Li Zhi-Xiong.,...&McKenzie, Dan.(2006).The crustal structure beneath the Shidao station on Xisha Islands of South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,49(6),1720-1729.
MLA	Qiu Xue-Lin,et al."The crustal structure beneath the Shidao station on Xisha Islands of South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 49.6(2006):1720-1729.