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14 Cards in this Set
- Front
- Back
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% of coastline lost in the last 25 years
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40
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Sea level rising rate
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6mm a year
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Reasons for eustatic rise
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global warming
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Reasons or isostatic fall
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Isostatic rise in Scotland due tomelting ice, causing the SE to sink
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Reasons for coastal squeeze
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sea rising over the salt marsh and then being pinned against the sea wall creating deeper water
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Abbotts Hall Farm Initiative: general approach
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Managed retreat
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Sea Wall removed in
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2002
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To replace the sea wall
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counter walls were built either side to protect the neighbouring farmland
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... of mudflats, saltmarshes ad grassland have been created
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80ha
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Seal wall removed before
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spring tide, so that seeds from saltmarshes could be brought in
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26
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Polder Sites
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Polder Sites
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Enclosed wooden fencing filled with willow hurdles which aim to reduce erosion
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Benefits of Abbotts Hall Farm Initiative
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Natural defence reducing erosion, cheaper than hard engineering, low maintanence costs, polders protect the seal wall from extreme erosion, more natural look, creates habitats, uses sustainable materials,salt marshes will reach equillibrium
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Costs of Abbotts Hall Farm Initiative
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Famers/landowners need to be compensated, old defences need to be removed (expensive), agriculture land lost behind the breached sea wall
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