Coastal Processes

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Hydraulic Action

When waves hit the coast they force water and air into cracks in the rocks. As the water surges it compresses the pockets of air and when the wave retreats the air is released and quickly expands. This continued process weakens the joints and cracks eventaully causing the rock to shatter.

Abrasion (also called corrasion )

Breaking waves throw sand, pebbles and…


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