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SlideshowReport

Wave Refraction

Description
Wave Erosion  
Caused by
Wave impact and pressure
Breaks down rock material and supplies sand to beaches
Abrasion – sawing and grinding action of water armed with rock fragments

Sand Movement on the Beach

Beaches are composed of whatever material is available
Some beaches have a significant biological component
Material does not stay in one place
Wave energy moves large quantities of sand parallel and perpendicular to the shoreline

Shoreline Processes

Wave refraction
Bending of a wave
Wave arrives parallel to shore
Results
Wave energy is concentrated against the sides and ends of headland
Wave erosion straightens an irregular shoreline

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