Seismic tomography of the crust and upper mantle in the Bohai Bay Basin and its adjacent regions

查看全文 作　　者：ZHANG Ling LIU JinSong HAO TianYao LIU JianHua XU [1,2]Yi

机构地区：[1]Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;[2]Gocad Research Group, Rue Doyen M. Roubault, 54501, Nancy, France Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;

出　　处：《Science China Earth Sciences》索引2007年第50卷第12期,共13页

基　　金：Supported by the 863 Project (Grant No 2004AA615010);the National Natural Science Foundation of China (Grant Nos 40620140435 and 40674046) 摘　　要：In the Bohai Bay Basin and its adjacent regions(112°―124°E,34°―42°N),there exists abundant gas-petroleum while modern inter-plate seismic activity is robust.Although the tectonic structure of this region is very complicated,plenty of geological,geophysical and geochemical data and results are obtained through previous researches.On the basis of absorbing previous results,especially various kinds of geological and geophysical results,we collect and process the arrival time of P-wave phases of local events and tele-seismic events recorded by the station within this region from 1978 to 2004,build the responding initial model,and image the velocity structure of the crust and upper mantle of this region via tomography.The perturbation images of various depths and velocity profiles imply that the velocity structure of the crust and upper mantle in the Bohai Bay Basin and its adjacent regions is mainly influenced by the surface tectonic units,and is characterized by 'Stripped along east-west,and zoned along south-north';some large-scaled faults penetrate Moho and lithosphere,and provide the channels for the basic lava or hot mass upwelling from the mantle. 关键词：Bohai BAY Basin, tomography, CRUST and upper MANTLE

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Seismic tomography of the crust and upper mantle in the Bohai Bay Basin and its adjacent regions

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