Remote Sensing of Wave Overtopping on Dynamic Coastal Structures

The development of coastal regions combined with rising sea levels is leading to an increasing risk flooding caused by wave overtopping natural beaches and engineered structures. Previous measurements have been obtained for static structures using fixed current meters depth sensors or tanks. These are unsuitable dynamically stable protection however, because the geometry these expected evolve under action. This study investigates potential use elevated 2D laser scanners (Lidar) remotely sense flow volumes time-varying crest a porous dynamic cobble berm revetment. Two different analysis methods were used estimate wave-by-wave from free surface elevation good agreement. results suggest that commonly EurOtop parameterisation can be discharge acceptable precision. An advantage remote sensing approach reported here it enables spatial distribution infiltration rate measured. It was found on revetment decays rapidly landward structure crest, this has implications safety design.