RIVER MOUTH CLOSURE AND WATER LEVEL VARIATION IN THE MONOBE RIVER
On-off shore sediment transport and water level variation were investigated in rivers characterized by frequent river mouth closure. Seasonal variation in on-offshore sediment transport was estimated by using the Sunamuras formula and it was found that onshore sediment transport becomes dominant in winter, and then sedimentation increases. It was considered that this seasonal change in sediment transport is caused by seasonal changes in wave period. The response characteristics of river water level to tide level change with the degree of a river mouth closure. The tide range ratio defined as the difference in the water-level of the river relative to the tidal difference is almost less than 0.5 when river mouth closure occurs.
Susumu Nakano Hiromi Kurosaki
Research Center for Management of Disaster and Environment, The University of Tokushima, 2-1 Minami-Josanjma-cho,Tokushima, Japan
国际会议
第四届亚太地区海岸会议(the Fourth International Conference on Asian and Pacific Coasts)
南京
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）