HYDRAULIC EXPERIMENTAL STUDY OF TSUNAMI GENERATION BY SUBMARINE LANDSLIDE

Abstract

 Experiments and analytical studies have been conducted on tsunamis caused by submarine landslides, but there are few research cases compared to aerial landslides. Therefore, the behavior of tsunamis generated by submarine landslides are not well understood. In this study, in order to investigate the characteristics of the tsunami generated by submarine landslides, tsunami experiments using granules and solid models were carried out using a two-dimensional cross-section channel. In order to understand the tsunami water level in the source area due to submarine landslides, the wave height gauges were installed densely. From the measurement results, the characteristics of the tsunami water level due to the submarine landslide were obtained. Furthermore, the flow field near the landslide generated by the submarine landslide was examined by numerical experiments, and the tsunami generation process was shown.