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Cliff Collapse Case Study: Christchurch Bay, Dorset

Rate of Cliff Collapse: 1-2 m/year

Fetch of approaching waves?: 3000 miles

Why are they collapsing?
a. Permeable sand lies on top of impermeable clay.
b. During storms heavy rain saturates the permeable sand, making it
much heavier and making the top…

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Social Impacts Economic Impacts Environmental Impacts
Private property Infrastructure Habitats could be
has been could be under loss when the cliff
destroyed as cliffs threat collapses
collapse Poor Area becomes
Homes by cliffs infrastructure unattractive due
lose value due to to cliff collapse
Having insurance unpredictable Some cliffs cannot


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