2. As waves approach the coast they refract and bend due to headlands and the ocean floors contour. Wave refraction causes the wave energy to be concentrated in particular areas and less than others.
3.
4. Beaches and Coastal Dunes
5. Hydraulic Action, Corrasion and Corrosion.
6. The accretion cycle is the cycle of is the formation of sand dunes due to decomposition of sediments.
7. Wind, Transportation and Erosion
8. Beaches
9. Coastal dunes are formed by wind. Sand is deposited on the beach and the wind blows the sand inward. The sand is then trapped by low lying vegetation and coastal spinifex. The pile of sand then becomes a foredune, which could then be eroded away or keep growing.
10.
Longshore drift moves sand along the beach in a zig-zag movement.11. Depositional landforms
Beaches
Dunes
Erosion Landforms
Badlands
Gully
12. The foredune provides a buffer zone for the fragile dune vegetation located on the hind dunes and so provide vital protection for property from erosion.
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