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学科主题: Geochemistry & Geophysics
题名: The crustal structure beneath the Shidao station on Xisha Islands of South China Sea
作者: Qiu, XL ; Zeng, GP ; Xu, Y ; Hao, TY ; Li, ZX ; Priestley, K ; McKenzie, D
通讯作者: xlqiu@scsio.ac.cn
关键词: South China Sea ; Xisha Islands ; Shidao Station ; teleseismic receiver function ; crustal velocity structure
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
发表日期: 2006
卷: 49, 期:6, 页:1720-1729
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Peoples R China; Earthquake Adm Hainan Prov, Haikou 570203, Peoples R China; Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China; Univ Cambridge, Bullard Labs, Cambridge CB3 0EZ, England
项目归属: 海洋地质
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.
原文出处: 查看原文
WOS记录号: WOS:000242388600019
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4388
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Qiu, XL; Zeng, GP; Xu, Y; Hao, TY; Li, ZX; Priestley, K; McKenzie, D.The crustal structure beneath the Shidao station on Xisha Islands of South China Sea,CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2006,49(6):1720-1729
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