breakwater


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breakwater,

offshore structure to protect a harbor from wave energy or deflect currents. When it also serves as a pier, it is called a quay; when covered by a roadway it is called a mole. In the United States a breakwater commonly consists of a long mound of stone rubble and of cheaper materials like rubber tires and oil drums. The flow of waves up its slope, and the formation of swirls by its rough surface dissipate wave energy. A pneumatic breakwater consists of perforated pipes discharging air bubbles; another type has underwater pipes that direct streams of water against approaching waves to cause them to break. Breakwaters are also used to promote sedimentation, which, depending on the breakwater's alignment, will infill to produce a stable beach. The Chesapeake breakwater was the first built in the United States. See coast protectioncoast protection,
methods used to protect coastal lands from erosion. Beaches can exist only where a delicate dynamic equilibrium exists between the amount of sand supplied to the beach and the inevitable losses caused by wave erosion.
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breakwater

[′brāk‚wȯd·ər]
(civil engineering)
A wall built into the sea to protect a shore area, harbor, anchorage, or basin from the action of waves.

breakwater

1. a massive wall built out into the sea to protect a shore or harbour from the force of waves
2. another name for groyne
References in periodicals archive ?
They came across a man stuck part way along the breakwater and helped him to safety, although it is not known if he was trying to reach the girls as well.
Breakwater Prospective Recoverable Resources (based on 2D seismic interpretation)
A Stena Line spokesman said: "Stena Line Ports Ltd has reluctantly taken the decision to close off access to the breakwater for all vehicular traffic following a spate of near misses and an increasing level of irresponsible driving behaviour at the location.
In the event of another earthquake in either the Nankai or Tonankai zones-an event expected to occur in the foreseeable future with a high degree of probability-a tsunami exceeding the height of the existing breakwater is projected.
It is noted that the hydrostatic water pressure acting on seabed and the composite breakwater is perpendicular with the surfaces of seabed and composite breakwater.
We have got a fantastic beach at Newbiggin where people can fish at minimal risk, without going out on the breakwater.
In The Breakwater House, they are inserted into the many inventions of the text, where they are almost shocking when they crop up.
5t units are used at the ends of the breakwater which are subjected to more severe conditions during a storm.
The Breakwater Edison offered a unique opportunity for a buyer to enter a tight market," said Christian Charre, a senior vice president of Jones Lang LaSalle Hotels.
The wave - believed to have been as high as 5m - slammed over the breakwater near a beach southwest of Seoul where dozens of people had been fishing and sightseeing, said an official.
They had no lifejackets or lights on the boat when they hit the breakwater at the entrance to West Cowes harbour at speed.
Those campaigning for the two-mile breakwater to be granted the status say it is crumbling and requires urgent renovation.