Coastal transportation and deposition
Longshore drift
Transportation of particles along a coastline is influenced by the strength of waves and the angle at which the waves strike the shorelineWhere the land meets the sea.. This is determined by the direction from which the prevailing wind blows:
- A pebble or sand particleA small, fine grain of eroded rock. moves from point A to B, carried by the swashThe water flowing towards a beach when a wave breaks. up the beachA coastal landform which usually contains sand, shingle or pebbles., the angle determined by the wave and wind direction.
- It is then pulled down the beach from B to C, carried by gravityThe force of attraction between all objects. The more mass an object has, the larger the force of gravity it exerts. and the wave's backwashThe movement of water down the beach..
- This process is repeated over and over again and the particle moves along the shoreline- this process is called longshore driftThe movement of material along a coastline due to the angled approach of waves..