气候变化领域集成服务门户(CCPortal): Seismic structure in the southeastern China using teleseismic receiver functions

CCPortal

DOI	10.1016/j.tecto.2013.06.033
	Seismic structure in the southeastern China using teleseismic receiver functions
	Li, Qiusheng; Gao, Rui; Wu, Francis T.; Guan, Ye; Ye, Zhuo; Liu, Qimin; Hao Kuo-Chen; He, Rizheng; Li, Wenhui; Shen, Xuzhang
通讯作者	Li, QS (通讯作者)
发表日期	2013
ISSN	0040-1951
EISSN	1879-3266
起始页码	24
结束页码	35
卷号	606
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.
关键词	UPPER-MANTLE STRUCTURE SAN-ANDREAS FAULT CRUSTAL STRUCTURE SOUTHERN CALIFORNIA OBLIQUE SUBDUCTION VELOCITY STRUCTURE TAIWAN REGION BENEATH CONSTRAINTS TRANSITION
英文关键词	Receiver functions; SE China; Moho; LAB; Mantle transition zone
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000326420900003
来源期刊	TECTONOPHYSICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258219
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]. 中国科学院青藏高原研究所,2013,606.
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.
MLA	Li, Qiusheng,et al."Seismic structure in the southeastern China using teleseismic receiver functions".TECTONOPHYSICS 606(2013).