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Ni Sidao, Zhou Yong, Qian Yunyi, Luo Xinyu, Wang Xiangteng. 2018: Are there links between the localized deformation in the northeastern section of Wenchuan earthquake source zone and the May 25，2008 Qingchuan strong aftershock?. Acta Seismologica Sinica, 40(3): 268-278. DOI: 10.11939/jass.20180016
Citation: Ni Sidao, Zhou Yong, Qian Yunyi, Luo Xinyu, Wang Xiangteng. 2018: Are there links between the localized deformation in the northeastern section of Wenchuan earthquake source zone and the May 25，2008 Qingchuan strong aftershock?. Acta Seismologica Sinica, 40(3): 268-278. DOI: 10.11939/jass.20180016
shu

Are there links between the localized deformation in the northeastern section of Wenchuan earthquake source zone and the May 25，2008 Qingchuan strong aftershock?

  • 1.

    Institute of Geodesy and Geophysics，Chinese Academy of Sciences，Wuhan 430077，China

  • 2.

    Department of Earth and Space Sciences，Southern University of Science and Technology，Shenzhen 518055，China

  • 3.

    School of Earth and Space Sciences，University of Science and Technology of China，Hefei 230026，China

More Information
  • Received Date: January 21, 2018
  • Revised Date: March 21, 2018
  • Available Online: April 20, 2018
  • Published Date: April 30, 2018
    Graphical Abstract
    • Abstract
  • A localized deformation zone near Muyu town of Qingchuan county was observed on the InSAR interferograms of the great 2008 Wenchuan earthquake. The Muyu deformation zone was about 15 km long and 10 km wide, with line of sight displacement up to dozens of centimeters. Some researchers proposed that the deformation zone is caused by a strong aftershock （MW6.1） in Qingchuan county on May 25, 2008, and they adopted seismic source parameters very different from seismic inversions. To verify reliability of the seismic source inversions, we use teleseismic body wave and local Rayleigh wave spectra to constrain focal depth and fault plane of the strong aftershock. Thereafter, we compute ground displacement and proposed that the aftershock was not the direct cause of the localized deformation zone. Then we discuss some candidate mechanisms which might explain the localized deformation.
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    • References (44)
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