構成地質の異なる流域から産出される河床材料の摩耗・破砕とそれが流下に伴う細粒化に及ぼす影響
2011 年 17 巻 p. 65-70
詳細
2011 年 17 巻 p. 65-70
Most grain-bed rivers show the longitudinal sorting on riverbed materials. This phenomenon is due to combination of the selective sorting and the abrasion. We developed the stochastic model of bed-load transport with the abrasion, and analyzed on 3 model rivers, which have the different tendency of the concavity. It was found that the relative importance of the selective transport and the abrasion on longitudinal sorting is related to the characteristics of abrasion and the grain distribution of watershed geology and lithology.
