A MORPHOLOGICAL BEHAVIOR MODEL FOR THE OUTER DELTA OF MIXED-ENERGY TIDAL INLETS

The long-term evolution of the seaward part of mixed-energy tidal inle t systems is analysed and modelled mathematically in terms of aggregat ed morphological parameters. The model is an adapted version of a two- line model, in which empirical information on the equilibrium state of the outer delta is included. Thus detailed computations of the water and sediment motion at the hydrodynamic time scale are avoided. The vi ability of the concept is tested and the model is verified against dat a from one of the inlets of the Western Wadden Sea. The results of a n umber of practice-based applications are shown and discussed.