Inputs - River sediment from cliffs that have been eroded or suffered landslides, and sediment that have been transported by waves from offshore (out at sea).
Processes - Wave action, tidal movements, erosion, weathering, transportation, deposition.
Outputs - Sediment washed out to sea, or deposited further along the coast.
Coastal sediment calls ( also called Littoral cells ) are lengths of coastline that are pretty much entirely self-contained for the movement of sediment. Each one is a coastal system. so processes going on in one cell don't affect the movement of sediment in another cell.
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