Seismic tomography and velocity structure in the crust and upper mantle around Bohai Sea area

	Seismic tomography and velocity structure in the crust and upper mantle around Bohai Sea area
	Li, ZW; Xu, Y; Hao, TY; Liu, JS; Zhang, L
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2006-05-01
卷号	49 期号:3 页码:797-804
关键词	Bohai Sea And Adjacent Area Curst And Upper Mantle Velocity Structure Seismic Tomography
ISSN号	0001-5733
文献子类	Article
英文摘要	Three-dimensional P wave velocity images of the crust and upper mantle beneath Bohai Sea and its adjacent regions are reconstructed through a tomographic inversion by using P wave arrival times from local and remote earthquakes, with a grid spacing of 0.5 degrees x 0.6 degrees in latitude and longitude directions. The velocity images reveal an evident lateral heterogeneity of the crust and upper mantle of the Bohai Sea regions. Velocity anomalies in upper-rnid crust reflect the character of surface geology: orogenic belt and uplift areas have high velocities, while depressions and sedimentary basins have low velocities; Widely-distributed low velocities in the mid-lower crust beneath North China correspond to high conductive layers in this region, which may be caused by partial-melting and magma activity. Velocity anomalies near Moho reflect the variation of crust thickness and the thermal state in crust-mantle boundary, while low velocity anomalies in uppermost mantle may be related with the upwelling of hot materials from asthenosphere.
WOS关键词	TRAVEL-TIMES ; NORTH CHINA ; BENEATH
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000237873000023
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66110]
专题	中国科学院地质与地球物理研究所
通讯作者	Li, ZW
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Li, ZW,Xu, Y,Hao, TY,et al. Seismic tomography and velocity structure in the crust and upper mantle around Bohai Sea area[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2006,49(3):797-804.
APA	Li, ZW,Xu, Y,Hao, TY,Liu, JS,&Zhang, L.(2006).Seismic tomography and velocity structure in the crust and upper mantle around Bohai Sea area.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,49(3),797-804.
MLA	Li, ZW,et al."Seismic tomography and velocity structure in the crust and upper mantle around Bohai Sea area".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 49.3(2006):797-804.