Wave Run-up and Wave Overtopping on a Rubble Mound Breakwater-Comparison of Prototype and Laboratory Investigations

Hydraulic model tests were performed within the European CLASH project at two different sites in Europe to hindcast measured overtopping rates during storm events from prototype measurements at the Zeebrugge rubble mound breakwater. The paper describes the general methodology behind this comparison and results regarding uncertainties in measurements of both waves and mean overtopping rates. Quantification of uncertainties is shown to be the first step in being able to quantify model and scale effects and therefore need to be properly assessed. First plots of available model tests showing considerable scatter in wave overtopping results are also given together with initial data points from prototype measurements.