10 - The Work of Waves and Tides Marine Scarps and Cliffs...

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The Work of Waves and Tides Marine Scarps and Cliffs The force of tons of water moving up and down the beach can do enormous amounts of work. Weak or soft materials-the forward movement of the waves cuts into the coastline. Erosion is rapid and the shoreline can recede rapidly. Marine cliff: rock cliff shaped and maintained by the undermining action of the waves mainly from storm waves. Wave action creates steep banks or scarps , as well as sea caves, arches and stacks Beaches and Littoral Drift Beach : thick, wedge-shaped deposit of sand, gravel, or cobbles in the zone of breaking waves Beaches absorb energy of waves Material moves on to and off the beach with the waves over time Weak waves – sand is slowly returned to beach. Beach stays stable but alternating via narrow and wide configurations over time. Beaches and Littoral Drift Breaking waves produce currents that move sediment along the shoreline in a process called Littoral drift
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This note was uploaded on 06/11/2011 for the course GEOGRAPHY 600-201010 taught by Professor Christopherpost during the Spring '10 term at Kent State.

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10 - The Work of Waves and Tides Marine Scarps and Cliffs...

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