Holdernesss Coast Mindmap
- Created by: TJM4
- Created on: 19-05-18 15:21
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- The Holderness Coast
- Key Facts
- Fastest eroding coastline in Europe
- Average rate of retreat is 2m per year
- Some places can erode 20m+ in a year
- It is 61km long
- Stretches from Flamborough Head to Spurn Point
- Over 30 villages lost along the coastline over the years
- Fastest eroding coastline in Europe
- Reasons for erosion
- Easily eroded rocktype
- The cliff is made from boulder clay which is likely to slump when it is wet that causes the cliff to retreat
- It has naturally narrow beaches
- Beaches slow waves down by reducing their erosive power. This means that narrow beaches give less protection to cliffs behind
- People worsening the situation
- Groynes have been built which makes beaches further down the coast narrower increasing eroding
- Powerful waves
- Strong winds from the north east creates powerful waves which erode the coast down faster
- Wet stormy weather
- The north east is prone to wet stormy weather. This causes the cliffs to become saturated which causes slumping. They are then battered by stormy waves causing cliff collapse
- Easily eroded rocktype
- Managment
- In 1991 almost £2 million was spent on two rock groynes and a rock revetment to protect Mappleton and the B1242 road
- The rocks were granite imported from Norway
- The rock groynes were intended to trap beach material
- Result
- A substantial amount of beach has accumulated between the groynes halting erosion
- Further south the rate of erosion has increased significantly because of material which is being carried south is not being replaced is it has been trapped in the groynes
- This means that further south there is no beach to protect the cliff
- In 1991 almost £2 million was spent on two rock groynes and a rock revetment to protect Mappleton and the B1242 road
- Key Facts
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