Onderwerp: Bezoek-historie

Analysis of SWAN hindcasts Wadden Sea, Oosterschelde and Slotermeer : SBW Waddenzee
Publicatiedatum:01-07-2008

Dit onderwerp bevat de volgende rubrieken.

Auteur(s)

G.Ph. van Vledder ; Alkyon

 

Samenvatting

Results of hindcast studies with SWAN wave model in the Amelander Zeegat, the Oosterschele estuary and the Slotermeer were analyzed to detect the cause of under-prediction of low-frequency wave energy in the coastal zone, the causes of prediction errors in the presence of the currents and the under-prediction of wave heights in depth-limited conditions. The results of this study show that the under-prediction of low-frequency energy is most likely caused by propagation effects, although the whitecapping formulation and bottom friction may also pay a role. Wave heights are over-predicted in opposing current and this is made worse by application of the adapted whitecapping formulation of WL (2007). The under-prediction of the wave heights in depth-limited situations is clearly worse for steep waves. It was also found that shallow water source terms affect the total source term balance. The under-prediction was the least by applying the surf breaking term with the breaking parameter gamma=0.8.

 

Annotatie

44 p.
bijl., ill.
With ref.
Project number: A2085
Report number: A2085R1
In opdracht van Deltares

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