EFFECTS OF GROUNDWATER TABLE ON WAVE BREAKING IN A GRAVEL BEACH

In this study, we investigated the characteristics of wave breaking on a gravel beach, considering the effects of the groundwater table. Wave breaking in 835 hydraulic model tests is studied. The experimental results of breaking index including the breaking wave height and breaking water depth in a gravel beach are compared with the existing breaking wave formula for computing breaker height and depth. The experimental results indicate that breaking wave heights and water depths are smaller than those in a sandy beach. Further, the higher the groundwater table, the higher breaking wave height and water depth.