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Coastal sediment supply

Coastal sediment supply is the transport of sediment to the beach environment by both fluvial and aeolian transport. While aeolian transport plays a role in the overall sedimentary budget for the coastal environment, it is paled in comparison to the fluvial supply which makes up 95% of sediment entering the ocean.[1] When sediment reaches the coast it is then entrained by longshore drift and littoral cells until it is accreted upon the beach or dunes.

While it is acknowledged that storm systems are the driver behind coastal erosion. There is a general consensus that human activity, mainly dam and reservoir impoundments on rivers are the cause of indirect human related coastal erosion, along with other local scale effects such as: land use change, irrigation, gravel extraction and river re-alignment.

  1. ^ Cite error: The named reference Walling, 2006 was invoked but never defined (see the help page).