Groyne - Wikipedia
A groyne (in the U.S. groin) is a rigid hydraulic structure built perpendicularly from an ocean shore (in coastal engineering) or a river bank, interrupting water flow and limiting the movement of sediment. It is usually made out of wood, concrete, or stone.
Groins and Jetties - U.S. National Park Service
2019年4月5日 · Groins are shore perpendicular structures, used to maintain updrift beaches or to restrict longshore sediment transport. By design, these structures are meant to capture sand transported by the longshore current; this depletes the sand supply to the beach area immediately down-drift of the structure.
What are the differences between breakwaters, groins, jetties …
A groin is a medium-sized artificial structure built perpendicular to the shoreline. It is built in series that work together to catch sediments in the surf zone brought by longshore drift. Unlike the breakwater, which generates calm water basins, groins are not constructed to create harbors and do not provide shelter to fishing boats, yachts ...
Groin | Definition & Facts | Britannica
groin, in coastal engineering, a long, narrow structure built out into the water from a beach in order to prevent beach erosion or to trap and accumulate sand that would otherwise drift along the beach face and nearshore zone under the influence of waves approaching the beach at an angle.
Groins | Coastal Processes, Hazards, and Society - John A. Dutton …
Groins are built to stabilize a stretch of natural or artificially nourished beach against erosion that is due primarily to a net longshore loss of beach material. Groins function only when longshore transport occurs. Groins are narrow structures, usually straight and perpendicular to the pre-project shoreline.
What is the function of a groin on a beach? - NCESC
2024年8月28日 · A groin is a shore perpendicular structure that serves several functions on a beach. Its main purpose is to maintain updrift beaches and restrict longshore sediment transport. Groins are designed to capture and trap sand that is carried by …
The Negative Impacts Of Groins - Coastal Care
2009年2月12日 · North Carolina law (G.S 113A-115.1) prohibits the use of groins – steel, rock or wood walls built perpendicular to the beach in order to trap shifting sand – and other permanent erosion control structures along ocean shorelines.
Maine Geological Survey: Coastal Marine Geology FAQ - Groins
2005年10月6日 · Groins are usually placed in groin "fields" (multiple groins) and are meant to inhibit the alongshore movement of sand and "catch" sand. This usually results in a wider, accretive beach on the updrift side of the groin, but a receding, erosive beach on the down-drift side of the groin.
Groins are shore-perpendicular coastal structures utilized to compartmentalize beaches and impound a portion of the longshore sediment transport.
11 Key Advantages and Disadvantages of Groynes |Definition …
2021年8月3日 · A groyne or groin (in the United States) is a stiff hydraulic structure placed perpendicular to the beach from an ocean shore (in coastal engineering) or from a bank (in rivers) that stops water flow and prevents sediment transport.