GRAIN-SIZE DISTRIBUTION OF SUSPENDED SEDIMENTS

Proceedings of the International Conference on Coastal Engineering

Ryuichiro Nishi¹  Kazuo Nakamura¹  Michio Sato¹ 

[1] Department of Ocean Civil Engineering, Kagoshima Univ.

关键词: suspended sediment;    grain-size distribution;   

DOI  :  10.9753/icce.v23.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

Field observations on the grain size distribution of suspended sediment in a surf zone has been carried out at Fukiage beach in 1990 and 1991. In these observations, a suction pump has been used to sample a sufficient amount of suspended sediment for grain size analysis. The instrument designed for the data collection worked well. Vertical distributions of sediment concentration for several grain sizes which compose suspended sediment are obtained. This enable us to do numerical simulations of beach evolution taking the composite character of suspended sediments into consideration. Results are compared with the ones obtained by conventional simulation method which assumes single grain size composition of beach materials, and discussed. The vertical distribution profiles of the concentration of suspended sediments are also compared with existing models and discussed.

【 授权许可】

Unknown