Abstract
Two-dimensional physical model experiments were conducted on a plain vertical seawall with a 1:20 sloping foreshore. Based on previous research, exponential equations were improved to describe spatial measurements for both impulsive and non-impulsive conditions. Comparisons were made between the spatial distributions from previous research studies, and compared to results of this study. It was observed that overtopping water generally distributes closer to seawall than previous predictions. 90% of overtopping was found generally to land within the distance of 0.04 wave-length under impulsive conditions, and similar results were observed in non-impulsive cases. A comparison between the spatial distribution of extreme events and total overtopping volume are discussed. Exponential equations are improved for fitting the distribution of extreme overtopping waves.
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