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Volume 33 Issue zk1
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SHEN Xu-zhang, QIN Man-zhong, ZHANG Yuan-sheng, GUO Xiao, LIU Xu-zhou, XU Kang-sheng, MEI Xiu-ping, WEI Cong-xin. Seismological evidence of ultra-crust faults in northeastern margin of Qinghai-Tibet Plateau[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 255-260.
Citation: SHEN Xu-zhang, QIN Man-zhong, ZHANG Yuan-sheng, GUO Xiao, LIU Xu-zhou, XU Kang-sheng, MEI Xiu-ping, WEI Cong-xin. Seismological evidence of ultra-crust faults in northeastern margin of Qinghai-Tibet Plateau[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 255-260.
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Seismological evidence of ultra-crust faults in northeastern margin of Qinghai-Tibet Plateau

  • 1. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China; 2. Lanzhou National Observatory of Geophysics, CEA, Lanzhou 73000, China; 3. Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, CEA, Lanzhou 73000, China

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  • Received Date: April 17, 2011
  • Published Date: November 30, 2011
    Graphical Abstract
    • Abstract
  • The crustal structure beneath the temporary seismic array is imaged with teleseismic receiver functions in Tianshui earthquake-prone area in the northeast margin of Qinghai-Tibet Plateau. The results indicate that the Lueyang-Diebu fault and the north margin of West Qinling Mountains fault are ultra-crust faults which penetrate the Moho and lead to the weakness of impendence-contrast of Moho. The earthquakes in this area often nucleate in the margin region with sharp variety of the velocity, and the huge earthquakes in history might occurred near the asperity resulting from the interaction between faults and Conrad discontinuity at the depth of about 20 km .
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    • References (18)
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