SEDIMENT TRANSPORT AND BEACH TRANSFORMATION

Tomoya Shibayama, Kiyoshi Horikawa

Abstract


Laboratory and field investigations were performed in order to formulate a predictive model of two-dimensional beach profile change. The observed transport was classified into six types, and transport formulas were deduced for each type based on a microscale description of sediment movement caused by wave action. A numerical model of two-dimensional beach transformation was then developed. Beach profile changes calculated with the model were then compared with the laboratory results. The model was found to give reasonable results except in the vicinity of the wave plunging point. The sediment transport calculation is based on a sinusoidal velocity profile. The model appeares to give good results as long as the wave motion can be reasonably approximated by linear wave theory.

Keywords


sediment transport; beach transformation; lab investigation;

Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.