Spectral wave modelling with non-linear dissipation: validation and applications in a coastal tidal environment

A spectral wave model with non-linear dissipation is validated and applied in wind-wave investigations in the Sylt-Romo Bight. The model was developed for applications in small-scale shallow-water environments. Numerical expe riments on wind waves in the bight demonstrate the applicability of the mod el in small-scale systems with time-varying, water levels and currents. A 1 -month hindcast of wind in the Sylt-Romo Bight is used to successfully vali date the model against field data. The influence of currents on wave parame ters is reproduced quantitatively. It is shown that inclusion of currents d istinctly improves the hindcast skill for wave periods. Case studies for pr escribed wind situations reveal a significant complex interaction of tide- and wind-driven currents on wind waves. (C) 2000 Elsevier Science B.V. All rights reserved.