Ecolocy-Conscious Submerged Breakwater

by Toshiharu Ozaki, Fishery Infrastructure Development, Center, Tokyo, Japan,
Koji Mitsuhashi, Fishery Infrastructure Development, Center, Tokyo, Japan,



Document Type: Proceeding Paper

Part of: Coastlines of Japan II

Abstract:

A submerged breakwater makes incident rough waves small when their heights exceed a certain level on the site, though the other waves lower than the level are not so much affected by the structure when they pass it over. The structure may be preferable on a coast where a clear view of sea is required, and on a water area fisheries and marine leisure activities need to keep an adequate water depth at the constructed site for their operations. The structure is also desirable for fishermen because they have empirically known that high-values marine products, like abalone, top-shell and spiny lobster, are prefer to live on the under water parts of coastal structures therefore fishermen expect submerged breakwaters will be used as fish habitat more effectively than other coastal structures.

Subject Headings: Coastal protection structures | Breakwaters | Sea water | Underwater structures | Submerging | Aquatic habitats | Fish and fishery management

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