Author(s): Kazunori. Wada
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Keywords: Rtificial reef; Beach nourishment; Sediment Control; Coastal Erosion
Abstract: Anti-erosion measures using an artificial reef and beach nourishment were implemented in the Numazu Section (commonly known as Senbon-hama Beach: Beautiful thousand pine tree beach) at the eastern end of Fuji Coast, where the number of incoming waves has increased partly because of the waves created along the breakwater at Numazu Port, located adjacent to the section, and the increase in the number of waves has resulted in erosion of the beach. The work was completed in fiscal 1999. On the basis of topographic changes after completion of the project and observation of the waves, the long-term effects of the facilities were analyzed. The analysis confirmed that the facilities exerted the protective effect assumed in the original plan in a sustainable manner. It also revealed that the size of the artificial reef could be reduced by combining it with beach nourishment in a composite manner and that the stability of the beach could be maintained without maintenance nourishment for more than five years, thereby providing useful hints for the future coastal management system.
Year: 2009