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実河川における粗度係数の変化 Variatio of the Coefficient of Roughness in Natural Rivers 内島, 邦秀 application/pdf For the purpose of studying the change of the coefficient of roughness in natural streams, eighty seven data obtained in the Tone River at Kurihashi are used. Then the author presents the relations between Manning’s roughness coefficient （n） and the position of then maximum depth of water area, and between n and the ratio k/R of the roughness height to the hydraulic radius that is known as the relative roughness. 北見工業大学 1969-12 jpn departmental bulletin paper https://kitami-it.repo.nii.ac.jp/records/6234 北見工業大学研究報告 2 4 519 524 https://kitami-it.repo.nii.ac.jp/record/6234/files/2-4-3.pdf application/pdf 2.1 MB 2016-11-22