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Coastal Landforms and Processes

Coastal Landforms and Processes Waves, Tides and Shallow Water Processes Littoral Zone Beaches & Seasonal Cycles Barrier Islands Beach Ridges Spits Deltas Coastal Cliffs Marine Terraces Wave-Cut Scarps Sea Level Fluctuations Barrier Island Migration Coastal Diversity 1 Hawaiian coastline Photo source: SCGS Factors Influencing Coastal Geomorphology Wind direct influence: saltation, dunes/blowouts indirect influence: wave generation, ocean circulation setup - setdown Seiches: lakes, estuaries, small seas, created by changes in barometric pressure, violent storms and tides. Storms: tropical, extratropical (Noreasters), storm surges, winds, waves Biology: reef builders, filter feeders, grasses/wetlands etc.

The Bering & Chukchi Seas: Arctic Coastal Plains & Barriers •The volcanic Aleutian Mountains extend some 2200 km (1370 miles) forming the border between the Pacific Ocean and the Bering Sea. •Beyond the Alaska Peninsula and bordering the Bering Sea, extensive coastal plains are found with numerous lakes and meandering streams.

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