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Yes. Sand exists underwater in many lakes and rivers and along many coastlines.
To stop the effects of longshore drift whereby beach sediment of sand and shingle are moved along the coastline. The reason for stopping this is because sand acts as a great form of natural defense against erosion of coastlines.
It transports and deposit sand at other places to create new beaches
A deposit of windblown sand is referred to as a sand dune. Dunes occur naturally along coastlines. A manmade barrier of sand with some kind of landfill under it is referred to as a berm.
It helps to break the waves as they come in, thereby reducing the effects of the waves taking the sand away.
Depositions change the coastlines because it deposits sand and silt there.
long-shore drift
Beach Drift
size of sand grains
The form of movement when sand particles bounce along the ground in moderate winds.
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.
Long-shore drift occurs in two ways: the wave driven movement of sand along the exposed beach and the current-driven movement of sand in the surf zone just offshore.