Coastal Management: Pevensey Bay

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  • Coastal Management: Pevensey Bay
    • Beach Replenishment
      • Alongshore drift moves beach material along the coast
      • Pevensey Bay is losing up to 25,000 cubic meters of beach material each year
      • In order to mantain beach levels 5,000 cubic meters of sand and gravel are trasnferred by lorry from further west
        • And another 20,000 cubic meters is taken frmo teh sea bed and sprayed back onto the beach
    • Beach Recycling
      • Beach sediment drifts West to East, some parts of the beach lose sediment and others gain sediment.
        • Done in the winter months when movement is greatest.
          • To try to even out the natural movement, material is moved from areaswhere it has built up and put it back in its orignial position.
      • To try to even out the natural movement, material is moved from areaswhere it has built up and put it back in its orignial position.
    • Beach Reprofiling
      • During winter months, beach material is carried down the beach by strong backwash
        • This leaves the upper beach vunerable for erosion
      • Bulldozers are used to push material back up the beach to create a gentle sloping beach profile
    • Beach Recycling
      • The natural process at Pevensey Bay acts like a converoyr belt.
        • Beach material is used West to East resulting in the western beach becoming increasingly depleted
      • 3 times a year large trucks are sued to move the beach material
        • The beach material collects to the east of the beach and mvoed to the west

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