THE EFFECT OF WAVE OBLIQUITY ON DUNE EROSION: A FIELD EXPERIMENT

Storm conditions can lead to excessive dune erosion with potential floods as a consequence. Barrier islands and low-lying countries protected by dunes are especially vulnerable erosion. To properly assess the risks these areas face, clear understanding of physical processes during is required. One such effect wave obliquity on sediment transport in surf zone. Classic models assume that volumes decrease under oblique attack, because time-averaged cross-shore undertow decreases magnitude offshore directed (Steetzel, 1993). More recent process-based predict an increase quantities, generated longshore currents zone concentrations, increases (Den Heijer, 2013). The main objective this study analyse through field experiment, quantifying decreasing but increasing alongshore current concentrations