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Sun Qikai, Chi Guomin, Chang Liu, Su Guangli, Tian Xiao. 2017: Characteristics of crust vertical deformation and seismic risk analysis in Liaoning area. Acta Seismologica Sinica, 39(6): 891-898. DOI: 10.11939/jass.2017.06.007
Citation: Sun Qikai, Chi Guomin, Chang Liu, Su Guangli, Tian Xiao. 2017: Characteristics of crust vertical deformation and seismic risk analysis in Liaoning area. Acta Seismologica Sinica, 39(6): 891-898. DOI: 10.11939/jass.2017.06.007
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Characteristics of crust vertical deformation and seismic risk analysis in Liaoning area

  • 1.

    First Crust Monitoring and Application Center, China Earthquake Administration, Tianjin 300180, China

  • 2.

    Earthquake Administration of Shandong Province, Ji'nan 250102, China

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  • Received Date: February 05, 2017
  • Revised Date: May 24, 2017
  • Published Date: October 31, 2017
    Graphical Abstract
    • Abstract
  • Based on the three-issue repeated measurement data of the Liaoning area, we calculate the vertical strain rate during 1988-1998 and 1998-2016, and draw the corresponding vector graph and isoline map of the vertical deformation rate. The correlation between vertical deformation characteristics and seismic activities is analyzed combining the geological background and tectonic activity in Liaoning area, thus to identify the overall trend of deformation and to require critical attention to the areas. The results showed that Liaoning region represents as inheritance movement, Liaodong and Liaoxi uplifts exhibit an upward trend, Liaohe down-faulted zone showed subsidence for a long time after MS7.3 Haicheng earthquake; the overall amount of difference of deformation in Liao-ning area decreased since 1998, the region's vertical deformation tends to be stable. The high gradient zone of deformation rate is still concentrated in the border of Liaohe down-faulted zone, Liaodong and Liaoxi area, and then these areas exist high potential risk and need sustained and focused attention.
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    • References (14)
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