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coasts - Coastal Landforms Beach profile 1 Lagoon shallow...

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Coastal Landforms
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W. W. Norton Beach profile 2. Marsh - wetlands dominated by grasses 1. Lagoon - shallow seawater separated from open ocean by barrier island
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W. W. Norton 4. Offshore - below “fair weather base” water depth 1. Backshore – between dunes and high tide 3. Nearshore - breakers and high tide level to where wave base intersects sea floor 2. Intertidal – between high and low tides
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Beach profile Slope depends on grain size of bed and wave energy Bars travel onshore during fair weather + offshore in winter Beach face -- slopes seaward Nearshore zone may have small, submerged ridges/bars
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berm berm Beach profile -- Backshore Berm -- high, flat area; height determined by maximum reach of swash Beach face
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Berm Dune Beach profile -- Backshore Dunes -- landward margin of many beaches Rest of backshore is dominated by aeolian (wind) processes
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Tidal fluctuations alternately expose and submerge Tidal fluctuations alternately expose and submerge tidal flats.
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