Coastal Management at Holderness

  • Created by: emily_w
  • Created on: 10-03-15 09:04
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  • Coastal Management in Holderness
    • Beach nourishment
      • Where?
        • Hornsea
      • How?
        • Dredged sand added to beach
        • Wider beach protects the cliffs
        • Areas downdrift are protected by adding sediment to coastal system
      • Negatives
        • The sand has to be replaced frequently because so much of it can be removed in one storm
    • Relocation and Coastal Zoning
      • How?
        • People are encouraged to move from at-risk areas to safer places
          • Receive help with costs
        • Council decide which places are allowed to erode
          • At-risk zones refused planning permission
        • Residents agree to demolish old home and build a new one, no larger than the old
          • Farms can be built in rural areas, as long as they are used for farming
      • Where?
        • People are encouraged to move to places like Bridlington
      • Negatives
        • Communities are split up
        • People who run local businesses may lose their livelihoods
    • Groynes
      • How?
        • Wooden groynes trap sediment from longshore drift
          • Waves forced to travel further up the beach and friction reduces their energy
        • Town and cliffs are protected because the beach is preserved
        • Costs £2 million but land is protected
      • Where?
        • Groynes built at Hornsea
      • Negatives
        • Places downdrift will be starved of sediment, because material is taken away by longshore drift but not replaced
          • Mappleton almost disappeared: erosion rate 4m/year by 1990
    • Recurved walls
      • How?
        • Recurved sea wall dissipates wave energy
        • Sea front is protected, so property is not devalued and tourism jobs are saved
        • Due to the benefits, the cost is justified
          • Cost of £6.3 million, but lasts a long time
      • Where?
        • Withersea
      • Negatives
        • Noise pollution
          • construction
          • Waves are louder when they break against the wall
        • Impacts on tourism
          • Smaller promenade
          • View from hotels limited
          • Tourists find the rock armour at the wall's base unattractive
    • Rock Revetment
      • How?
        • Large granite boulders protect Easington's gas terminal
        • Boulders are placed like a wall along the shoreline
        • Wave energy is absorbed by air gaps and large surface area of boulders
      • Where?
        • Easington
      • Negatives
        • Expensive, though they are long-lasting
        • Aesthetically displeasing


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