Lifes a Beach Geological Processes Living wih_Trembanis_Date_031610_72

Lifes a Beach Geological Processes Living wih_Trembanis_Date_031610_72

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Overview: coastal region constantly changes primarily due to waves o erosion (a human problem)- retreat is a natural phenomenon o deposition Many people live in coastal regions o 80% of people in U.S. live with easy access of coast Coastal Regions: Coast and coastline beach dynamic equilibrium backshore, shore, foreshore nearshore and offshore Beach Profile: beach o recreational beach o sub aerial vs. subaqueous berm longshore bars longshore trough Intro to Beaches: What is the beach? o A beach is the zone of unconsolidated material that extends from the low water line to where there is an abrupt change in physiographic form of vegetation (ex: dune scarp, seawall, etc). Beaches occur wherever there is mobile sediment along the shore, in the region between extreme low and extreme high water. Important Concepts: a beach adopts the form that is most effective in dissipating that energy supplied to it as long as sediment is available and mobile, a beach can maintain dynamic
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Lifes a Beach Geological Processes Living wih_Trembanis_Date_031610_72

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