Coasts Overview

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  • Coasts
    • Waves
      • Destructive
        • High wave in proportion to length
        • Breaks downward with great force
        • Weak swash
        • Strong backwash
      • Constructive
        • Strong swash
        • Weak backwash
        • Low wave in proportion to length
      • Size and Energy depends on...
        • the fetch
        • the strength of the wind
        • how long the wind has been blowing for
    • Coastal processes
      • Weathering processes
        • Freeze-thaw Weathering
        • Biological Weathering
        • Chemical Weathering
      • Mass movement
        • Rockfall
        • Mudflow
        • Landslide
        • Rotational slip
      • Erosion Processes
        • Hydraulic Action
        • Abrasion
        • Attrition
        • Solution
      • Transportation Processes
        • Longshore drift
        • Solution
        • Suspension
        • Saltation
        • Traction
      • Deposition
        • Waves lose energy and slow down
        • Shallower water
        • Sheltered areas
        • Little or no wind
    • Landforms
      • Erosional
        • Headland
        • Wave-cut platform
        • Cave
        • Arch
        • Stack
        • Stump
      • Depositional
        • Spit
        • Bar
    • Engineering Strategies
      • Hard
        • Sea Wall
        • Groynes
        • Gabions
        • Rock Armour
      • Soft
        • Beach Reprofling
        • Dune Regeneration
        • Beach Nourishment
      • Managed Retreat
    • Dune formation
      • 1. Sand accumulates against a feature
      • 2. Wind speed decreases behind, increasing deposition
      • 3. Marram Grass colonises and stabilises the embryo dunes
      • 4. Wind speed decreased, increasing deposition. More sand  captured
      • Embryo, Fore, Yellow, Grey, Dune slack

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