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| Roland, Aron; Ardhuin, Fabrice. |
| The development of numerical wave models for coastal applications, including coupling with ocean circulation models, has spurred an ongoing effort on theoretical foundations, numerical techniques, and physical parameterizations. Some important aspects of this effort are reviewed here, and results are shown in the case of the French Atlantic and Channel coast using version 4.18 of the WAVEWATCH III R model. Compared to previous results, the model errors have been strongly reduced thanks to, among other things, the introduction of currents, coastal reflection, and bottom sediment types. This last item is described here for the first time, allowing unprecedented accuracy at some sites along the French Atlantic Coast. The adequate resolution, necessary to... |
| Tipo: Text |
Palavras-chave: Wave modeling; Bottom friction; Coupling; Wave-current interaction. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00192/30288/29918.pdf |
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| Bennis, Anne-claire; Dumas, Franck; Ardhuin, Fabrice; Blanke, Bruno. |
| Wave set-up is often underestimated by the models (e.g. Raubenheimer et al., 2001). Our paper discusses how the wave set-up may be changed by the inclusion of turbulent mixing in the bottom shear stress. The parameterization developed in Mellor (2002) for phase-averaged oscillatory boundary layer is used for this purpose. Two studies are carried out. The dependence of the parameterization on the vertical discretization and on the magnitude of the near-bottom wave orbital velocity is investigated. The function that distributes the turbulent terms over the vertical is modified, giving a good agreement with the average of the phase-resolved velocities, but an overestimation of the turbulent phase-resolved velocities. Applying that parameterization to simulate... |
| Tipo: Text |
Palavras-chave: Bottom friction; Vertical mixing; Wave set-up; Nearshore processes. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00188/29970/28482.pdf |
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