2005 Volume 49 Pages 985-990
This research focuses on relationship between river bank erosion and river bed longitudinal profile of a straight channel. Firstly, we constructed one-dimensional model of river bed deformation with bank erosion due to shear stress. To use this model, the diffusion equation with an advection phase was drawn. Secondary, we investigated the interaction between river bed profile and river width, through movable-bed experiments. As a result of the 1-D diffusion equation and the experiments, the following were found.(1) The aspect ratio h/B is important parameter for longitudinal plofile with bank erosion.(2) As the aspect ratio is related to coefficient of advection phase of the diffusion equation, we can explain that the aspect rasio has close relevance to sediment transport considering geographical condition.