Modeling Penetration of Tide-Influenced Waves in Le Havre Harbor
Résumé
The access channel to Le Havre harbor (France, English Channel) experiences significant tide-induced variations of wave height associated with current refraction. The present study analyzes the penetration of these modulated waves in the harbor basin Hubert Raoul-Duval of the new Port 2000 infrastructures. A numerical approach is adopted on the basis of a phase-resolving model driven by external-predicted height, period, and direction of approaching waves submitted to tide-induced variations. Numerical results of wave height are compared with field data collected at two wave buoys in the access harbor channel and the inner basin. The propagation of tide-influenced waves within the harbor induces semidiurnal variations of wave height in its inner basin with slight influence of local ambient tidal currents. Tide-influenced changes in the incident wave directions result in an increased exposition of the northern wharves at high tide and the eastern interior breakwater at low tide for the period of simulation. Finally, modeling is further exploited through a sensitivity study that analyzes different forcings of the model by external measurements at a single location in the entrance harbor channel.
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