Possibility of Driftwood Detection in a Dam Reservoir with a Narrow Multi-Beam Sonar System

DOI 2 Citations

Bibliographic Information

Other Title
  • ナローマルチビームを用いたダム湖の沈木探査の可能性

Description

<p>In 2017, the Susobana Dam in Nagano prefecture became uncontrollable because sediments and submerged driftwood clogged the bottom outlet during flood control. This incident was induced by a combination of large amounts of sedimentation residue which reached the bottom of the gate and driftwood clogged the gate travelling through the flushing water. Such incidents will occur more frequently as now more and more reservoirs are suffering from sedimentation and climate changes, which are a result of these severe flood events nowadays. However, there are few studies on the process of how driftwood is generated, submerged and transported by a flood, thus the driftwood movement during the incident is still a matter of speculation. In this study, as a first step for understanding the dynamics of driftwood movement in reservoirs, we applied the Narrow Multi-Beam sonar (MBES) system to detect the current distribution of driftwood in the Susobana reservoir.</p>

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Details 詳細情報について

  • CRID
    1390010292722066944
  • DOI
    10.11315/jsde.32.4
  • ISSN
    18808220
    09173145
  • Text Lang
    ja
  • Data Source
    • JaLC
    • KAKEN
    • Crossref
  • Abstract License Flag
    Disallowed

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