超音波減衰スペクトル法による六角川感潮部の懸濁物質濃度と粒度分布の連続計測

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タイトル別名
  • MEASURING CONCENTRATION AND PARTICLE SIZE DISTRIBUTION OF SUSPENDED SEDIMENT IN THE ROKKAKU RIVER ESTUARY USING ULTRASONIC ATTENUATION SPECTROSCOPY
  • チョウオンパ ゲンスイ スペクトルホウ ニ ヨル ロク カドカワカン チョウブ ノ ケンダク ブッシツ ノウド ト リュウド ブンプ ノ レンゾク ケイソク

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抄録

Analyzing river water samples in a laboratory has been the traditional method used to monitor suspended sediment in rivers. In recent years, however, optical backscatter (turbidity), laser diffraction, pressure-difference, acoustic backscatter, and other surrogate techniques have been adopted increasingly according to the circumstances of each measurement point. The author et al. developed a suspended sediment monitoring system based on ultrasonic attenuation spectroscopy. Using the new system, a test was conducted to continuously measure the concentration and particle size distribution of suspended sediment in the Rokkaku River estuary, and it was verified that ultrasonic attenuation spectroscopy is a promising surrogate technique.

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