Wave Overtopping Experiment
Reefs offer natural protection to coastal island nations through the physical processes of wave breaking on the reef rim, reducing the wave energy that reaches the shoreline. However, both mean and infra-gravity water levels build up over the reef due to wave breaking on the reef that can lead to coastal inundation. In this presentation, laboratory data of revetment overtopping is compared to best-practice formulas. The results of the lab experiments show that overtopping rates increased with increasing wave period, narrower reef widths, shorter revetment heights and higher still water levels. The effect of revetment slope varied with water level.