The experimental data about interacted dynamics between discrete sand and fluid is required for sophistication of the numerical simulation, however the simultaneous measurement method of dynamics of a sand particle and fluid is not yet established. This paper concerned with the fundamental experiment in view of the sediment transport process due to tsunami, particles and fluid were identified based on the particle projected area in the analysis process of Particle Tracking Velocimetry. As a result, particle velocity is lower than the fluid and it is pointed out that the particles are more active regarding the velocity fluctuation of a vertical direction. In particle concentration distribution, it is suggested about the dynamic characteristics of particles based on consideration by the applicability of the Rouse profile that bed-load transport is superior.
