beaches - Beaches Beaches A beach is a landform consisting...

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Beaches Beaches
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NASA A beach is a landform consisting of loose material such as sand and gravel that has accumulated by wave action at the shoreline
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Coastlines come in a variety of forms W. W. Norton
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Barrier Island Barrier Island Sandy Beach, North Carolina
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Most beaches are composed of sand Gulf of Mexico Lagoon Mainland Florida Barrier Island
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Major Parts of Beach Mud Silty Sand Sand Silt/Clay Silt/Clay
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Beach face/Swash face Beach face/Swash face Beach profile Beach profile
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Berm Dune Beach profile – Backshore Backshore Dunes – landward margin of many beaches Rest of backshore is dominated by aeolian processes
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Sand Budget for a Beach Sand Budget for a Beach The inputs (gains) and outputs (losses) of The inputs (gains) and outputs (losses) of sediment by sedimentation and erosion. sediment by sedimentation and erosion. Sedimentation > Erosion = Positive Budget Beach Growth Erosion > Sedimentation = Negative Budget Beach Erosion
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Fig. 18.28 W. W. Norton
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beaches - Beaches Beaches A beach is a landform consisting...

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