Abstract
The behavior of tsunami near the coast is similar to that of flow rather than high waves such as typhoons. Therefore, the stability and hydraulic functions against tsunami of coastal and harbor structures have to be investigated because several kinds of coastal and harbor structures are designed only for high waves. In this study, hydraulic experiments in a wave basin are conducted to investigate the influence of the configurations of the structures on the tsunami height. In the experiments, the time series of water surface elevation, water particle velocity and wave pressure acting on the structures are measured. The authors show that (1) the distribution of tsunami height along the coast is not corresponding to that of the water surface elevation. (2) Rapid increase in flow velocity is measured at an area where the configuration of the structures is complicated. The results obtained in this experiment are useful for verifying numerical models.
