What are geomorphic processes and how do they affect the coast at Hengistbury Head? Setting the scene Hengistbury Head is a scenic and historic headland near the town of Bournemouth on the south coast of England. It stands mid-way between Poole harbour and Hurst spit and forms the main division between Poole and Christchurch Bays.
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A parcel of air can become trapped/compressed in these cracks when water is thrown against it. The increase in pressure leads to a weakening/cracking of the rock. | Corrasion| When waves approach the coastline they are carrying material such as sand, shingle, pebbles and boulders. Abrasion occurs when this material is hurled against cliffs as waves hit them, wearing the cliff away. | Coastal Transport| Description| Solution| Minerals are dissolved in seawater and carried in solution. The load is not visible.
Load can come from cliffs made from chalk or limestone, and calcium carbonate is carried along in solution. | Suspension| Small particles are carried in water, e. g. silts and clays, which can make the water look cloudy. Currents pick up large amounts of sediment in suspension during a storm, when strong winds generate high-energy waves. | Saltation| Load is bounced along the seabed, e. g. small pieces of shingle or large sand grains. Currents cannot keep the larger and heavier sediment afloat for long periods. | Traction| Pebbles and larger sediment are rolled along the seabed
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