Morphodynamic evolution of double-barred beaches

The linear and nonlinear morphological behavior of double-barred coastal systems under the forcing of obliquely incident waves is studied using a nonlinear numerical model. The linearly most unstable bed forms consist of crescentic patterns (rip channels), whose spacing depends on the magnitude of the longshore current velocity. Using the...

Modelling rhythmic morphology in the surf zone

Coastal erosion is increasingly being prevented by the application of shoreface nourishments. Although they are applied successfully, their development and their impact on the coastal system is still difficult to predict. Especially the effects of shoreface nourishments on the already existing rhythmic bed forms in the surf zone are unknown. The...

Morphodynamic instabilities of planar beaches: Sensitivity to parameter values and process formulations

The initial growth of bed perturbations on planar sloping beaches under the forcing of obliquely incident, breaking waves is investigated using a state?of?the?art numerical model. This allows for a systematic investigation of the sensitivity of the spatial structures of the bed perturbations and their growth and migration rates to different...

Large-scale sandpits - Hydrodynamic and morphological modelling of large-scale sandpits

Large-scale, marine sand mining in front ofthe Dutch coast might be necessary in the near future in order to meet the needs of sand for regular engineering works and/or for a possible second Maasvlakte or a national airport on an artificial island. In order to make a socio-economically and environmentally sound decision with respect to location...

Large-scale sandpits: Hydrodynamic and morfological modelling of large-scale sandpits