FIELD INVESTIGATION AT A MOUTH OF SMALL RIVER

Hitoshi Yanaka, Nubuo Shuto

Abstract


Field measurements have been carried out at the mouth of the Nanakita River in Japan. The maximum velocity at the throat section was kept constant, 1 m/sec, although the river mouth topography changed much rapidly in a week. It therefore seems that the equilibrium condition at the river mouth can be expressed in terms of the maximum velocity. The wave set-up height measured in the river mouth was also analyzed and was found to be responsible for the intrusion of sand into the mouth.

Keywords


river mouth; small river; field investigation

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