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What kinds of landforms do longshore drift and longshore currents produce?
what is a current
What is the zig zag movement of sand along the shoreline?
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.
Describe how material is transported along a beach?
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)
How does longshore drift happen?
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.
What is sediment laid down by glacial meltwater called?
stratified drift ;D
What is the process by which beach sediment moves down the beach with the current?
the process in which beach sediment move down a beach with the current
What drift in longshore drift?
Beach sediment
Why is a longshore drift a problem at Dawlish Warren?
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.
Is longshore drift the cause or effect of a longshore current?
Longshore drift is the process of sediment moving along a beach due to wave action. It is driven by the longshore current, which is a current that flows parallel to the shoreline. Therefore, longshore drift is the result or effect of a longshore current.
What is the process called when the waves repeatedly hit the beach and some of the sediment moves down the beach with the current?
Longshore Drift
Is longshore drift the cause or effect of a longshore current. Explain?
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.
How was a beach created?
longshore drift
Is longshore drift the cause or the effect of a longshore current explain?
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.
What Is the name of the process in which beach sediment moved down is called?
This process is known as longshore drift.
How do groynes prevent longshore drift?
Groynes are barrier structures built perpendicular to the coastline. They trap sediment that is being carried by longshore drift, helping to build up and retain the beach. This reduces the amount of sediment that is moved along the coast by wave action, helping to stabilize the coastline.
How does a spit formed?
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.
Why is Longshore drift bad?
Longshore drift can be problematic because it can lead to the erosion of coastlines by transporting large amounts of sand and sediment away from one area to another. This can result in the loss of beaches, destruction of habitats, and damage to coastal infrastructure. Longshore drift can also impact navigation and water quality in affected areas.
