Resilience measure: Breakwater


Breakwaters are structures constructed on coasts as part of coastal defense or to protect a port and port entrance from the effects of both heavy sea state and longshore drift. They are build to reduce the intensity of wave action in the lee of the structure by a combination of reflection and dissipation of incoming wave energy. When used for harbors, breakwaters are constructed to create sufficiently calm waters for safe mooring and loading operations, handling of ships, and protection of harbor facilities. Breakwaters are also built to improve maneuvering conditions at harbor entrances and to help regulate sedimentation by directing currents and by creating areas with differing levels of wave disturbance. Protection of water intakes for power stations and protection of coastlines against tsunami waves are other applications of breakwaters. When used for shore protection, breakwaters are built in near shore waters and usually oriented parallel to the shore. (ASTARTE, Aydin D.C. et. al., 2014 )

Co-benefits and impacts

Breakwaters can influence longshore sediment transport and thus, breakwaters can support stability of the coast line, protect a port and its surroundings. (ASTARTE, Aydin D.C. et. al., 2014 )

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Last modified: Sept. 13, 2016, 9:25 a.m.