ISSN 1004-4140
CN 11-3017/P
Volume 19 Issue 3
Sep.  2010
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LI Peng, ZHOU Shi-yong, CHEN Yong-shun, FENG Yong-ge, JIANG Ming-ming, TANG You-cai. 3D Velocity Structure in Shanxi Graben and Ordos from Two Plane Waves Method[J]. CT Theory and Applications, 2010, 19(3): 47-60.
Citation: LI Peng, ZHOU Shi-yong, CHEN Yong-shun, FENG Yong-ge, JIANG Ming-ming, TANG You-cai. 3D Velocity Structure in Shanxi Graben and Ordos from Two Plane Waves Method[J]. CT Theory and Applications, 2010, 19(3): 47-60.
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3D Velocity Structure in Shanxi Graben and Ordos from Two Plane Waves Method

  • Institute of Theoretical and Applied Geophysics, School of Earth and Space Sciences, Peking University, Beijing 100871, China

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  • Received Date: May 25, 2010
  • Available Online: December 12, 2022
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    • Abstract
  • Using the broad-band seismic data of Peking University and CENC,taking the method of two plane waves tomography,we have obtain the phase velocities of Rayleigh wave and the 3D shear velocities in Ordos region.Through analyzing the results,we have found the phase velocities of Rayleigh wave in Shanxi graben and Weihe graben are lower.High velocity anomaly beneath moho has been observed in Ordos block,indicate that Ordos block is a stable craton,and its effect extend to 120km depth at least;in the depth between 70 and 120km of Shanxi graben and Weihe graben,shear velocities were lower than origin model,indicating that the substance there had plasticity and these region are strong activity,which is consistent with the activity of earthquake.
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