Hidekazu@OOKUBO

Characteristics of wave induced by sudden lateral momentum intrusion

Tokuzou HOSOYAMADA

Tsnami is mainly generated by vertical deformation of sea bottom. Many numerical studies for tsunami have been done by making use of the fault model, which determines initial vertical displacement of water surface. However, tsunami may occur if landslides or debris flow intrude to the sea. In this study, a series of laboratory experiments have been carried out to investigate fundamental characteristics of waves which is induced by sudden lateral momentum intrusion. Numerical wave simulation with boundary horizontal momentum intrusion is also carried out. Wave profile changes with the shape and weight of the wooden model. Results of numerical wave simulation agree with experimental results qualitatively.