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- W3144310386 abstract "On the basis of data of long period Rayleigh surface wave, we select 43 two-station paths which cover the eastern China thoroughly. By using the improved method of multi-filtration, we obtain the group velocity and amplitude spectrum, and then get attenuation factor for each paths. We employ Talentola inversion method to get local attenuation factor, and further invert the three-dimension oP image under the crust and upper mantle in the eastern Chinese continent The QB image shows the following basic characters. There is correlation between the seismic activity and oP structure under the crust and upper mantle in North China region. The Yangtze block begins to collide with and subduct to the North China block from the southern border of the Qinling in the southern Shaanxi. In the large part of Yangtze quasi-platform appear an obvious high oP area at 88 km deep. In the east of Sichuan depression platform, the juncture of Sichun and Guizhou, and the Jiangnan block near the juncture of Guizhou and I Iunan, the lateral variation of oP in the crust is little, and there is a high-oP layer no thinner than 40 fan in the top mantle. In the Dian-Qian fold and fracture region between Yunnan and Guizhou, the vertical variation of oP at the region of the crust and upper mantle is little, there is a low-op layer in the top mantle, about 40 km thick, low-op layer of the upper mantle begins to appear at about 95 km deep. In the east of Yangtze quasi-platform and the central and eastern part of the South China fold system, the Moho is smooth, the lateral variation of oP in the crust is also little, low-QB layer of the upper mantle begins to appear at about 85 kin deep." @default.
- W3144310386 created "2021-04-13" @default.
- W3144310386 creator A5044479294 @default.
- W3144310386 date "2000-01-01" @default.
- W3144310386 modified "2023-09-25" @default.
- W3144310386 title "Q_β tomography under the crust and upper mantle in eastern China" @default.
- W3144310386 hasPublicationYear "2000" @default.
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