Abstract
A mathematical model is presented to describe the formation of river mouth terraces in this paper. The spatial distributions of velocity and suspended sediment concentration are obtained by the use of the integration method and the similarity assumption of lateral profiles of velocity and suspended sediment concentration. The inceptive topography of river mouth terraces are then obtained from the velocity and sediment concentration distributions. It is found that the sediment deposits on both sides of the jet axis when the suspended load is dominant and the effect of advection and diffusion is relatively small, while it deposits on the axis when the bedload is dominant.
