Wave runup on composite beaches and dynamic cobble berm revetments

The effects of climate change and sea level rise, combined with overpopulation are leading to ever-increasing stress on coastal regions throughout the world. As a result, there is increased interest in sustainable adaptable methods protection. Dynamic cobble berm revetments consist gravel installed close high tide shoreline sand beach designed mimic naturally occurring composite beaches (dissipative sandy around shoreline). Existing approaches predict wave runup or pure have very poor skill for this restricts ability engineers assess flood risks at existing sites design new protection structures. This paper presents high-resolution measurements from five field large-scale laboratory experiments investigating dynamic revetments. These data demonstrated that as swash zone transitions fronting berm, short-wave component significant height rapidly increases can dominate over infragravity component. When toe submerged tide, it was found strongly controlled by water depth berm. due decoupling offshore conditions dissipative nature beach. insight, setup dissipation used develop first beach/dynamic revetment-specific methodologies predicting runup.