Field Studies of Megagravel Transport: Relevance for Coastal Infrastructure Engineering

Abstract Extreme wave impacts on coastal infrastructure, including bridges, is a growing problem. Highest energy events are difficult to study because direct observations in real time almost impossible. Also the non‐linear dynamics model or reproduce scaled experiments. Coastal boulder deposits incorporating megagravel (y axis >4.1 m) provide natural analogues of infrastructure components such as bridge deck slabs; and field measurements these wave‐transported blocks can address this knowledge gap. In contribution we present geoscience data relating topography, climate, dislodgement up 620 tonnes. We hope that will generate new synergies among geocientists engineers.