Définition des conditions de vagues pour la conception d'un havre de pêche à Sept-îles

Abstract

This paper presents the results of numerical studies to define the wave climate inside the Bay of Sept-îles, where it is proposed to build a small craft harbour. This wave climate is relatively complex as it results from waves coming from outside the Bay, that is from the estuary of the St. Lawrence, or generated inside the Bay itself. Such information is required to select the configuration of the harbour and the best location among the various sites proposed. Waves have been recorded at a station outside the Bay in 1966 – 1967 and inside the Bay in 1983. These records were used to calibrate the wave forecasting model based on wind data recorded at Sept-îles airport. They were also used to validate results obtained from a refraction model used to determine wave transformation from outside to inside the Bay. Then waves were forecasted over a long period (1953 – 1984), for the ice-free season, and used to study wave agitation inside different schemes proposed for harbour configuration and site. The study shows that there is a need to obtain better wave information and to improve the numerical models. Key words: wave forecasting, wave transformation, wave records, wave modeling, harbor, Sept-îles.