4.4 Coastal Landscape case study, Holderness Coast

  • Created by: Aimee978
  • Created on: 12-11-17 13:13
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  • Topic 4.4- Coastal case study, Holderness Coast
    • About Holderness
      • Stretches from Flamborough Head to Spurn Head
      • Erosion is causing cliffs to collapse
        • Cliffs are mostly made out of clay which is easily eroded (it's likely to slump when wet)
      • Beaches are narrow so they don't offer much protection
        • Longshore drift moves material South, exposing a new area of cliffs to erosion (coastline retreats)
      • It faces the prevailing wind direction, waves from the Norwegian Sea
        • Waves increase in power over the long distance so they are highly erosive.
    • Parts protected by coastal defences (hard)
      • There are towns and villages where people live and work
      • Important infrastructure (B1242) links many towns and businesses along the coast
      • There is a gas terminal which supplies 25% of UK gas
    • Defences have causes problems further down the coast
      • Groynes protect local areas but narrow beaches further down the coast
        • Increases erosion e.g Great Cowden which has lots of farms and caravan parks
      • Material produced from erosion transported down Humber estuary
        • Reducing erosion and therefore its material risks flooding the estuary because there's less material to slow it down.
          • Led to coastal retreat along other coasts because no new material is being added
      • Bays are forming between protected areas
        • The protected areas become headlands which are eroded more heavily
          • This makes maintaining defences in protected areas more expensive

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