Seismic structure in the southeastern China using teleseismic receiver;functions

doi:10.1016/j.tecto.2013.06.033

	Seismic structure in the southeastern China using teleseismic receiver;functions
	Li, Qiusheng 1; Gao, Rui 1; Wu, Francis T.; Guan, Ye 1; Ye, Zhuo 1; Liu, Qimin 3; Hao Kuo-Chen ; He, Rizheng 1; Li, Wenhui 1; Shen, Xuzhang 5
刊名	TECTONOPHYSICS
	2013
卷号	606;SI SI 页码:24-35
关键词	Receiver functions SE China Moho LAB Mantle transition zone
ISSN号	0040-1951;EI 1879-3266
DOI	10.1016/j.tecto.2013.06.033
英文摘要	The southeastern margin of China is an ideal area to study the modern plate interactions. The previous models, however, are poorly constrained with respect to the geometry due to the sparse coverage. Here we present new observations from a temporary array with 20 stations in southeastern China.;We isolated converted seismic phases in the P and S wave coda to generate receiver function from the structure of the crust and upper mantle. By using H-K stacking and common conversion point stacking, the geometry of discontinuities above was imaged along the southeastern Chinese coastline. The CCP section shows Moho dips gently northeastward with a mean depth of 30 km. The 410 and 660 km discontinuities are at the depth close to IASP91 model. This means that we have not seen any significant anomaly from Moho and mantle transition zone that corresponded with the geodynamics of plate subducting, instead, we found that the crust was ruptured by Min River fault to depth of the Moho.;We provide a 2D map of Moho topography by combining our crustal thickness to that from permanent stations, active seismic and OBS offshore profiles. The map is consistent with previous studies and shows a crust that thins coastward and southwestward in the rate of similar to 1.5 km per 100 km. We image the lithosphere-asthenosphere boundary at a depth of 60 to 70 km by using S-wave to combine with the P-wave. Our crustal structure suggests that Min River fault certainly plays an important role in adjusting regional stress field induced by plate interactions in the study area. Our lithospheric thickness is more consistent with a very strongly attenuated continental lithosphere. Given the close proximity to the coast this might suggest that the lithospheric mantle transitions to oceanic before the crust does. Alternatively, we may infer that the continental lithosphere has been thermally eroded in this region. (C) 2013 Elsevier B.V. All rights reserved.
学科主题	地震地质学
WOS关键词	UPPER-MANTLE STRUCTURE ; TRAVEL-TIME TOMOGRAPHY ; SAN-ANDREAS FAULT ; WAVE-FORMS ; CRUSTAL STRUCTURE ; TAIWAN REGION ; SOUTHERN CALIFORNIA ; OBLIQUE SUBDUCTION ; VELOCITY STRUCTURE ; CONVERTED WAVES
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000326420900003
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40092]
专题	中国地质科学院地质研究所
作者单位	1.CAGS, Inst Geol, Beijing 100037, Peoples R China. 2.CAGS, Key Lab Earthprobe & Geodynam, Beijing 100037, Peoples R China. 3.Wu, Francis T.] SUNY Binghamton, Dept Geol Sci, Binghamton, NY 13902 USA. 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China. 5.Natl Cent Univ, Inst Geophys, Chungli 32001, Taiwan. 6.China Earthquake Adm, Lanzhou Inst Seismol, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Li, Qiusheng,Gao, Rui,Wu, Francis T.,et al. Seismic structure in the southeastern China using teleseismic receiver;functions[J]. TECTONOPHYSICS,2013,606;SI SI:24-35.
APA	Li, Qiusheng.,Gao, Rui.,Wu, Francis T..,Guan, Ye.,Ye, Zhuo.,...&Shen, Xuzhang.(2013).Seismic structure in the southeastern China using teleseismic receiver;functions.TECTONOPHYSICS,606;SI SI,24-35.
MLA	Li, Qiusheng,et al."Seismic structure in the southeastern China using teleseismic receiver;functions".TECTONOPHYSICS 606;SI SI(2013):24-35.