Modeling cross-shore sediment transport processes with a time domain Boussinesq model

A phase-resolving sediment transport model is developed by combining a time domain Boussinesq model and a wave boundary layer model, and is used to investigate cross-shore sediment transport. Using free-stream velocities obtained from the Boussinesq model, we model sediment transport rate using a power law and instantaneous bed shear stress predicted from a quasi-steady approach and a boundary layer model. The model is used to reproduce an onshore sand bar migration event observed during the DUCK94 field experiment. Relatively good agreement is achieved.