Coastal Management

this took effort to make:)

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  • Coastal Management
    • Revetment
      • Advantages
        • cheap
        • looks natural
        • long life span
        • good at protecting bottom of cliffs
      • Disadvantages
        • needs maintenance
      • sloping feature
      • breaks up/absorbs wave energy
      • allows sediment through
    • Gabion
      • Advantages
        • relatively cheap
      • Disadvantages
        • catches rubbish - can smell
        • short life span
        • easily damaged
        • steel - rusts
      • metal cage
      • filled with rocks
      • usually about 1m x 1m
    • Beach Replenishment
      • Advantages
        • uses natural resources
      • Disadvantages
        • short life span
        • expensive
      • collect sand from ocean
        • squirt sand on beach
      • absorbs wave energy
    • Managed Retreat
      • Advantage
        • cheap
        • nature takes its course
      • Disadvantages
        • causes conflict
        • loss of...
          • buisness
          • homes
          • farmland
          • roads
      • allows natural erosion to occur
      • low value land allowed to flood
        • protects higher value land
    • Rip-Rap
      • Advantages
        • looks natural
        • good permeability
      • Disadvantages
        • short life span
      • layers of hard rock
      • absorbs wave energy
    • Sea Wall
      • Disadvantages
        • needs maintenance
        • looks ugly
        • expensive
        • erosion continues where scheme ends
      • Advantages
        • effective
        • long life span
        • halts local erosion
      • a wall is built
    • Groyne
      • wood or rock
      • slows LSD
      • Advantages
        • cheap
        • looks natural
      • Disadvantags
        • short life span
        • needs maintenance

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