COASTAL MANAGEMENT

Soft Engineering

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SOFT ENGINEERING: COAXING NATURAL PROCESSES ALONG.

BEACH NOURISHMENT

  • sand & shingle added to beaches from elsewhere
    e.g. dredged from offshore.
  • creates wide beaches, which reduce erosion of cliffs more than narrow beaches.

BEACH STABILISATION

  • reducing slope angle & planting vegetation/sticking stakes & old tree trunk into beach to stabilise sand.
  • also creates wider beaches = reduced cliff erosion.
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DUNE REGENERATION

  • sand dunes created/restored by nourishment/stabilisation of sand.
  • they provide a barrier between land & sea, absorbing wave energy & preventing flooding & erosion.

LAND USE MANAGEMENT

  • important for dune regeneration.
  • vegetation needed to stabilise dune can easily be trampled/destroyed, leaving dune vulnerable to erosion.
  • wooden walkways across dunes, fenced-off areas that prevent walkers/cyclists from accessing dunes = reduced vegetation loss.
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CREATING MARSHLAND FROM MUDFLATS

  • can be encouraged by planting vegetation
    e.g. glassworts.
  • vegetation stabilises sediment & stems & leaves, reducing wave speed.
  • therefore, waves' erosive power & how far they reach inland are reduced, leading to less flooding of the area around the marsh.

COASTAL REALIGNMENT (MANAGED RETREAT)

  • breaching existing defence, allowning the sea to flood the land behind.
  • e.g. breaching sea walls @ Holderness.
  • over time, vegetation will colonise the land & it will become marhsland.
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