Computed Tomography Imaging inside the Beach by Matching of Refractive Index

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  • インデックスマッチング法を用いた砂層内部の断層撮影
  • インデックスマッチングホウ オ モチイタ サソウ ナイブ ノ ダンソウ サツエイ

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In this study, grain size analysis of sediment were carried out using image processing in order to clarify the distribution of particle diameter and grain sorting quantitatively. The drift sand in the coastal zone is the important problem in the research of beach erosion and sedimentation, and many researchers are trying modeling of this process. Many laboratory experiments of sand transport under oscillatory flow and waves have been carried out in order to clarify the process of sand transport. However, there are a few studies which measured grain size distribution inside the beach. In this study, the grains size distribution is estimated from the computed tomography imaging inside the beach by matching of refractive index.

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