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there is about 7 groynes along dover beach. I think. sorry if this is wrong. if you know different CORRECT THIS

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12y ago

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Are Groynes being used at Borth?

Having studied the aerial view of Borth on Google Earth - there are groynes at regular intervals from Upper Borth to Ynyslas.


How do groyne work?

Groynes are placed so as to reduce coastal (or riverside) erosion. In the coastal case, they interrupt the flow of sediment along the coast, and accumulate it alongside the groyne. They are only temporary, though with a life of decades. Riverside groynes rely upon their mass to prevent current erosion of the riverbank. They will not usually accumulate sediments in any great quantity.


How do groynes protect the coast?

They prevent, or slow down erosion, and stop longshore drift. This, however, can have bad knock-on effects somewhere near.They are usually made of concrete, wood or rocks. They can make beaches look ugly or natural. You have to get the right length of a groyne right other wise they may not work, to do this you have to measure the wave energy and look at the beach slope.-Hope this helps!A groyne is an artificial structure designed to trap sand being moved by longshore drift, therefore protecting the beach. They can be built using timber, concrete, steel, pilings and rocks.


How do groynes stop continental drift?

They don't. Groynes inhibit longshore drift. Longshore drift occurs when currents develop parallel to a shoreline as a result of wave action, carrying sediment with them. Groynes catch sediment and interfere with these currents. Continental drift, a part of plate tectonics, is a completely unrelated process.


Why is long shore drift important?

it doesnt 'work' first of all though i shall tell you what happens! sand is carried as the tide comes in it goes out straight and pushed back to shore diagonally. like this |/|/|/|/|/ unless groynes are put in not like groins!!!! GROYNES when there is a strong swash there will be a weak backwash leaving rubbish on the beach. when there is a weak swash there will be strong back wash taking rubbish away that is long shore drift,