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Holderness Coast
Descrição
Mapa Mental sobre Holderness Coast, criado por Leilia Paske em 20-12-2016.
Sem etiquetas
case study
gcse
Mapa Mental por
Leilia Paske
, atualizado more than 1 year ago
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Criado por
Leilia Paske
mais de 7 anos atrás
26
1
0
Resumo de Recurso
Holderness Coast
Physical causes
weather
in winter months
north-easterly dominant winds, higher sea level (surges)
heavier precipitation
increased subaerial processes and mass movement (slumping)
Waves
destructive north-easterly waves
fetch up to 800kms
provide strong backwash
eroding and transporting silts out to sea
Geology
weaker boulder clay cliffs erode easier
Human causes
development
increasing the saturation
increasing pop density
lesuire and holiday facilities
impervious surface
interfering with natural coastal processes
Groynes at Hornsea, Mappleton and Withernsea
settlements down drift seen rapid erosion
up to 10 metres per year
attribute to sediment starvation
constantly eroding, 29 villages have fallen in since the roman times
strategies used
Mappleton
450 metres of cliff protected by 61,500 tons of rock armour, 2 groynes and a slopping revetment
Hornsea
has 1.6 km of sea wall, groynes and rock armour
Bridlington
3.6 km sea wall and groynes
stabilises beaches
popular tourist destination 34,000
Withernsea
2.3km of sea wall, groynes and rock armour
Easington
environmentally sensitive area
1km revetment along base of cliff
133,000 tones of rock
how sustainable is the management
most of the land is farmland and has low value
protection hard to justify
policy of protection is to defend larger settlements
nothing to prevent erosion elsewhere
highly expensive
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