COMPLETE CLOSURE OF THE NANAKITA RIVER MOUTH IN 1994

Proceedings of the International Conference on Coastal Engineering

Fumihiko Takahashi¹  Hitoshi Tanaka³  Atsushi Takahashi² 

[1] Penta-Ocean Construction Co. Ltd.;Niigata Prefecture;Department of Civil Engineering, Tohoku University

关键词: river mouth;    Nanakita River;    river closure;   

DOI  :  10.9753/icce.v25.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

Very severe draught occurred in Japan during the dry season in 1994. Due to considerably reduced river discharge, complete closure was induced five times at the Nanakita River mouth in Japan during this period. Detailed field observations were carried out immediately before and after the closures. By analyzing hydraulic characteristics measured at the mouth, date of the closure occurrence can be estimated. An analytical solution is derived for predicting time-variation of river mouth width under the combined influence of incoming waves and effluent river discharge.

【 授权许可】

Unknown