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what is a current
Longshore drift is the process that moves sand and other sediments along a shoreline. It is also referred to as longshore transport or littoral drift.
Material can be transported along a beach via longshore drift;Waves approach beach at an angleMaterial is pushed up the beach by the swash in the same direction as the wave approachAs the water runs back down the beach the backwash drags material down at right angles to the beach lineOver a period of time sediment moves in this zig-zag fashion down the coast.Material can also be transported along a beach at low tide when the sand dries out by the wind (usually forming sand dunes)Material may also be transported up and down a beach by attrition. Waves may have fairly high energy so will pick up material and may loose energy further up the beach and therefore deposit it there.Might also be moved by saltation (waves carry slightly smaller sediment in the same way as attrition)Waves may be swash-aligned (waves hit beach straigt on, so sediment moved up and down beach) or drift-aligned (waves hit beach at right angles causing longshore drift)
The process of longshore drift is waves hit up against the sand and the sand grains are taken by the waves back into the sea and back to shore again, this is called swash ans backwash.
stratified drift ;D
the process in which beach sediment move down a beach with the current
Beach sediment
Longshore drift moves sediment along the beach which lengthens the sand spit. Groynes have been put in place to try and reduce the effects of longshore drift.
Longshore Drift
effect. longshore drift is the combined effect of sediments moved by longshore currents and and beach drift. longshore currents are ocean currents that flow parallel to the coast while beach drift is the resultant zigzag movement along the beach.
effect. longshore drift is the combined effect of sediments moved by longshore currents and and beach drift. longshore currents are ocean currents that flow parallel to the coast while beach drift is the resultant zigzag movement along the beach.
longshore drift
This process is known as longshore drift.
A spit or sandspit is a deposition landform found off coasts. At one end, spits connect to land, and extend into the sea. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at cove's headlands, by the process of longshore drift. Longshore drift (also called littoral drift) occurs due to waves meeting the beach at an oblique angle, and backwashing perpendicular to the shore, moving sediment down the beach in a zigzag pattern. Longshore drifting is complemented by longshore currents, which transport sediment through the water alongside the beach. These currents are set in motion by the same oblique angle of entering waves that causes littoral drift and transport sediment in a similar process.
Angled waves create a current that runs parallel to the coatline. As waves repeatedly hit the beach, some of the beach sediment moves down the beach with the current.
Longshore drift in most cases, or sometimes waves.
Longshore drift in most cases, or sometimes waves.