Surf zone morphodynamics during low-moderate energetic condtions; The TASTI field experiment

Abstract

During low-moderate energetic conditions, onshore migration of intertidal bars results in beach accretion. The mechanisms driving the onshore directed transport of sand and their relative importance are still under debate. To improve our knowledge on these mechanisms, a field experiment was conducted at the beach of Vejers, Denmark. Measurements of flow velocities including turbulence, sand concentrations and morphology were collected in the intertidal zone for a period of four weeks. This resulted in a unique dataset including detailed measurements at multiple locations during two periods with an onshore migrating intertidal bar. This paper gives an insight in the type of measurements that were collected, the hydrodynamic conditions and resulting variability in the cross-shore and alongshore morphology during the campaign, and presents preliminary results.