Abstract
The relationship between the velocity distribution and the distribution of the suspended sediment concentration inside a wave around the surf zone has not been fully explained. In this study, we studied the time-space distribution of the suspended sediment concentration around the surf zone. Furthermore, we have made observations on the relationship between the velocity distribution and the distribution of the suspended sediment concentration inside a wave. As a result, it has become apparent that the distribution of the suspended sediment concentration was dependent on the flow velocity inside the wave. The suspended sediment concentration is lower during the time period before a wave reaches the breaking point. As a wave approaches the breaking point, the flow velocity at the center of the wave crest becomes greater, the bottom shear force increases, and suspended sediment concentration increases.
