Study on the Method of Estimating Volcanic Ash Volume by Using Meteorological Radar based on Particle Size Distribution at Sakurajima Volcano

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Bibliographic Information

Other Title
  • 桜島における火山灰粒径分布測定に基づいた気象レーダーによる火山灰堆積量推定手法の開発に関する研究

Description

 A large quantity of volcanic ash produced by the volcanic activity leads to the urban functions failure. In the surrounding area of the volcano, it caused the landslide disaster. In order to taking quick recover action from the disaster and to predict the landslide disaster, we need to know the distribution of the real-time volcanic ash volume. Now, meteorological radar is expected.   We therefore studied the volcanic ash particle size distribution in Sakurajima by videosonde which improved for volcanic ash measurement. Then amount of volcanic ash has been estimated from radar reflectivity and volcanic ash particle size distribution. From the results of this study comparing the radar reflectivity factor of X-band MP radar with the observed value on the ground, we tried to define the relationship between them. As a result, only one biggest eruption during observation campaign gave a sample having good correlation between radar and videosonde.

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Details 詳細情報について

  • CRID
    1390282680688054272
  • NII Article ID
    130005491902
  • DOI
    10.11520/jshwr.28.0_100119
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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