A cell that carries sediment between the beach, cliff and sea
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What is a sediment budget?
Amount of sediment available within a sediment cell
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What might happen if sediment budget fails?
Waves continue to transport sediment and erosion may increase as the sea has surplus energy
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What happens if the sediment budget increases?
More deposition is likely. Any surplus sediment is deposited. Known as negative feedback
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Longshore drift
Movement of sediment along the coastline by wave action. The swash (waves moving up the beach) and backwash (waves moving back down the beach) carry sediment along the beach at a right angle.
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Depositional landforms: Offshore bars
A long ridge of sand or pebbles formed a short distance out to sea, in shallow waves where destructive waves break before reaching the beach.
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Depositional landforms: tombolos
Forms after LSD carries sediment across a gap between the mainland and an island, forming a narrow long ridge of sand and pebbles.
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Depositional landforms: Cuspate forelands
Roughly triangular shaped headlands, developed when LSD from two opposite directions forms two spits across a bay. These meet and shelter the bay behind them, which fills them with sediment
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Other cards in this set
Card 2
Front
What is a sediment budget?
Back
Amount of sediment available within a sediment cell
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