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East Coast Estuaries

Description
Stabilizing the Shore

Erosion problems along U.S. Coasts
Atlantic and Gulf Coasts
Development occurs mainly on barrier islands
Face open ocean
Receive full force of storms
Development has taken place more rapidly than our understanding of barrier island dynamics

Erosion problems along U.S. Coasts
Pacific Coast
Characterized by relatively narrow beaches backed by steep cliffs and mountain ranges
Major problem is the narrowing of the beaches
Sediment for beaches is interrupted by dams and reservoirs
Rapid erosion occurs along the beaches

Shoreline classification is difficult
Classification based on changes with respect to sea level
Emergent coast
Caused by
Uplift of the land, or
A drop in sea level

Classification based on changes with respect to sea level
Emergent coast
Features of an emergent coast
Wave-cut cliffs
Marine terraces
Submergent coast
Caused by
Land adjacent to sea subsides, or
Sea level rises
Features of a submergent coast
Highly irregular shoreline
Estuaries – drowned river mouths
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