Statistical analysis of hydrograph and Hi-net seismic noise power during the 2019 Typhoon Hagibis case

DOI
  • SAWAZAKI KAORU
    National Research institute for Earth Science and Disaster Resilience, Earthquake and Tsunami Research Division
  • P.C. Shakti
    National Research institute for Earth Science and Disaster Resilience, Flood and Landslide Research Division

Bibliographic Information

Other Title
  • 令和元年東日本台風時の水位記録とHi-net地震計ノイズ記録の統計解析

Abstract

<p>To monitor river-flow status in the upstream basin, we have proposed to use seismic noise record excited by a streamflow. In this study, we used water-level records of MLIT and seismic noise records of Hi-net to examine the relationships between hydrographs and seismograph.</p><p>The target flood event was the 2019 typhoon Hagibis case. As a result, the similarity of hydrograph and seismograph is higher in the upsteram basin rather than in the downstream basin because of intense excitation of seismic noise due to higher river-flow speed and lower amount of cultural noise energy. We also found that the similarity decreases as the distance between seismological and hydrological observatories increases.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390017193115822080
  • DOI
    10.11520/jshwr.36.0_402
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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