流砂量の多い状態のハイドロフォンによる流砂計測（音圧データの取得）

• 水山 高久

  京都大学大学院農学研究科

• 松岡 美和

  京都大学大学院農学研究科

• 野中 理伸

  株式会社ハイドロテック

書誌事項

タイトル別名

• Bedload measurement by acoustic energy with Hydrophone for high sediment transport rate
• リュウサリョウ ノ オオイ ジョウタイ ノ ハイドロフォン ニ ヨル リュウサ ケイソク オンアツ データ ノ シュトク

抄録

Hydrophone has been used to measure bedload transport intensity by counting the number of pulses made by hitting of sand and gravels to a steel pipe. When sediment transport rate is high, the sound level is continuously high and never drops low resulting in that the number of counting becomes low or zero. Sound level is recorded to know sediment transport intensity instead of pulses when sediment transport rate is high. The method was adopted in the Waru-dani torrent, a branch of the Jinzu River. The relationship between acoustic energy and pulses were analyzed. The acoustic energy was well recorded and showed sediment transport intensity as well as the record of pulses. It was found that there is an appropriate amplification. As we have not obtained good data for high sediment transport rate, we will continue the measurement.

収録刊行物

• Journal of the Japan Society of Erosion Control Engineering

  Journal of the Japan Society of Erosion Control Engineering 61 (1), 35-38, 2008-05-15

  公益社団法人 砂防学会

キーワード

• bedload measurement
• hydrophone
• acoustic energy

詳細情報

• CRID: 1390001205478742400
• NII論文ID: 130004662120
• NII論文ID: 10021228359
• NII書誌ID: AN0012035X
• DOI: 10.11475/sabo.61.1_35
• ISSN: 21874654
• ISSN: 02868385
• NDL書誌ID: 9522327
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9522327
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可