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Gao Y F，Dai D H，Zhang N. 2022. Analytical study on the topographic effect on ground motion of Feitsui canyon. Acta Seismologica Sinica，44（1）：40−49. DOI: 10.11939/jass.20210099
Citation: Gao Y F，Dai D H，Zhang N. 2022. Analytical study on the topographic effect on ground motion of Feitsui canyon. Acta Seismologica Sinica，44（1）：40−49. DOI: 10.11939/jass.20210099
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Analytical study on the topographic effect on ground motion of Feitsui canyon

  • 1.

    Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering，Hohai University，Nanjing 210098，China

  • 2.

    Geotechnical Research Institute，College of Civil and Transportation Engineering，Hohai University，Nanjing 210098，China

More Information
  • Received Date: June 06, 2021
  • Revised Date: August 30, 2021
  • Available Online: January 13, 2022
  • Published Date: March 17, 2022
    Graphical Abstract
    • Abstract
  • The local amplification or attenuation of ground motion is often caused by the surface irregular topography, which is due to the scattering phenomenon when the seismic wave propagates to the local topography. Although the topographic effect was first discovered in the anomalous seismic records, the ground motion data recorded by the topographic influence array are very few. There are five earthquakes recorded by six strong-motion accelerometers deployed along the Feitsui canyon recorded from the Hualien earthquake in 1992. Using our analytical theory of seismic wave propagation around a non-symmetrical V-shaped canyon excited by a line source of SH waves, the strong motion accelerations of the site were simulated. The influences of topographic effect on the ground motion of the Feitsui canyon are revealed. The comparison between the simulated results and those ground motion accelerations recorded indicates that the proposed analytical theory of seismic wave propagation around V-shaped canyon is suitable for simulating the topographic effects on ground motions.
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    • References (56)
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