MODEL FOR PREDICTING BATHYMETRIC AND GRAIN SIZE CHANGES BASED ON BAGNOLD’S CONCEPT AND EQUILIBRIUM SLOPE CORRESPONDING TO GRAIN SIZE COMPOSITION

Proceedings of the International Conference on Coastal Engineering

Yasuhito Noshi²  Masumi Serizawa¹  Takaaki Uda¹  Akio Kobayashi¹  Takayuki Kumada¹ 

[1] ICOMNET Ltd.

关键词: Bagnold’s concept;    equilibrium slope;    navigation channel;    bathymetric change;    grain size change;   

DOI  :  10.9753/icce.v32.sediment.15

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

A model for predicting bathymetric and grain size changes considering the equilibrium slopes corresponding to each grain size and its composition was incorporated into the BG model proposed by Serizawa et al. (2007). The model was applied to predict the beach changes at Kemigawa Beach. The cross-shore sorting of sand, in which the grain size gradually decreases with increasing depth, and the formation of a gradually changing longitudinal slope were accurately reproduced. The model was also applied to predict the selective accumulation of fine sand in a navigation channel after dredging and its impact on the nearby coast.

【 授权许可】

Unknown