As waves propagate into shallow water, the orbital wave velocities penetrate the water depth, and the source function due to wave-bottom interaction become important. The dissipation source function used in the spectral wave module is based on the quadratic friction law and linear wave kinematic theory. The dissipation (proportional) coefficient proportional depends on the hydrodynamic and sediment conditions as described in Johnson and Kofoed-Hansen (2000).
Bottom friction specification
General description
Remarks and hints