@article{oai:meio-u.repo.nii.ac.jp:00001301,
 author = {田代, 豊 and 古我知, 大},
 issue = {23},
 month = {2020-12-03},
 note = {排水路内を流出する赤土等による濁水に布片（「赤土パッチ・テスター」）を浸漬し，布片が土壌粒子によって染色される程度を指標として，排水路内の濁水濃度を簡単で安価に観測する手法を確立した。室内実験で濃度の異なる濁水に布片を時間を変えて浸漬した結果から，布片の青色明度と彩度は，浸漬後10分間程度でほぼ一定になり，濁水の濃度と良好に相関することが示された。さらに，フィールドで排水路に布片を設置して降雨時に発生する濁水に浸漬させたところ，赤土による染色が確認された。染色程度をデジタル画像解析によって数値化し，これに基づいて濁水濃度を推定することにより，多地点における赤土等汚染発生状況を容易に観測することができた。, A new, simple, and low-cost surveillance method for red soil pollution has been developed. In this method, textile tissues （‘Red Soil Patch-testers’） are dipped in turbid water which has become muddy due to the outflow of red soil into drains. Then, the extent of textile dyeing from soil particles is measured and the value is converted into the concentration of muddy water. In the laboratory, textile tissues were dipped in turbid water whose concentration of soil varied. The experimentation showed that the blue luminosity and chroma of the textile tissues became almost constant in about 10 minutes after dipping them in turbid water and each of those values showed good correlation with the concentration of turbid water. In the field, we set the textile tissues in drainage ditches and dipped them in the muddy water which was brought about by rain. We found that the tissues were dyed with red soil. By digitizing the extent of dyeing using the image analysis of digital photographs of dyed tissues and estimating the SS concentrations of drain water based upon those values, we could observe the condition of red soil pollution breakouts in many spots quite easily., application/pdf},
 pages = {63--68},
 title = {布片への染色を用いた赤土等流出状況調査手法の開発},
 year = {}
}