TIME-RELATED FLUCTUATION OF WAVE OVERTOPPING DISCHARGE ON SEAWALLS

The purpose of this study is to clarify the time-related fluctuation of wave overtopping discharge on seawalls by random wave using many experimental results until now.Seawall shape with the object in this study are upright seawall, upright seawall with set back parapet, perforated upright seawall and gentle slope-type seawall.To begin with, representative wave overtopping discharge by the definition equal to the representative wave height was obtained for these seawalls. Next, the shape parameter as the weibull distribution applied appearance probability distribution of wave overtopping discharge of individual wave was required. In addition, the relationship between this shape parameter and the relative water depth, wave steepness, relative crest height, wind velocity, etc.are discussed for the case of each seawall.