Author(s): Seizo Ueno; Kazuo Ishino; Takao Toe; Hidehiro Katsui; Takaaki Uda; Atsushi Omata
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Abstract: A new type of submerged breakwater, named SURF, has been developed. Submerged breakwaters do not disturb the view. However, the general type of breakwater, which is usually made of rocks or concrete blocks, needs to be of a large dimensions to reduce the wave energy. On the contrary, SURF is made up of a caisson which has a inclined top plate with several sills, and is quite effective in the reduction of wave height in spite of it's small dimension. In this study, wave distributions, patterns of nearshore currents, and bed evolutions around SURF are discussed based on the results from three-dimensional model tests. The currents behind SURF are characterized by an onshore flow over the caisson, and an offshore flow at the opening section. Shoreline movements and scours at the opening are related to these currents.
Year: 1991