INFLUENCE OF SEDIMENT SUPPLY ON BEDROCK EROSIONAL MORPHOLOGY

Abstract

Natural bedrock rivers form diverse erosional morphologies. The results of recent investigations have suggested that the bedrock erosion rate depends on discharge, slope, width, bedrock roughness and sediment supply. However, little is known about how these parameters affect spatial patterns of bedrock channel morphology. In this study, we conducted numerical simulations to evaluate the influence of sediment supply on bedrock bed state. The numerical results suggest that the increase of sediment supply leads to the formation of a single inner channel in a bedrock river.