Landslide Characteristics Revealed by High-Frequency Seismic Waves from the 2017 Landslide in Central Japan

DOI PDF 被引用文献5件
  • Issei Doi
    Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan
  • Takuto Maeda
    Graduate School of Science and Technology, Hirosaki University, Hirosaki, Japan

書誌事項

公開日
2020-07-22
DOI
  • 10.1785/0220200032
公開者
Seismological Society of America (SSA)

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<jats:title>Abstract</jats:title> <jats:p>The recent development of advanced seismograph networks offers us a chance to remotely detect landslide occurrences with high-frequency (&gt;∼1  Hz) components. This study examined a landslide in central Japan that produced clearly detectable seismic signals at multiple seismic stations in a permanent network. Wave packets propagated with a group velocity of 3  km/s from the landslide area. Using a source location determination method with amplitude information from the high-frequency component, the source location of the wave packets was shown to be in the vicinity of the landslide with an error of 5 km. Moreover, seismograms specific to this landslide also contained a distinct impulsive phase with a source located in the vicinity of the landslide. The study demonstrated that seismic waves with a high-frequency component from landslides can be used to estimate their mechanisms as well as their locations when they are recognized by a routine seismic network.</jats:p>

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