HOLDERNESS AS CS
- Created by: aml1
- Created on: 11-05-17 20:05
View mindmap
- HARD ENGINEERING: Holderness
- SUCCESS??
- groynes trap sediment, increasing width of beaches
- protects LOCAL area, increases erosion of cliffs down-drift
- (material eroded from beach isn't replenished)
- Mappleton scheme: caused increased erosion of cliffs south of Maplleton
- Cowden Fram (south of Mappleton) now at risk from flood
- protects LOCAL area, increases erosion of cliffs down-drift
- Sediment from erosion of Holderness coast is normally washed into Humber Estuary
- (helps to form tidal mudflats)
- reduction in sediment increases the risk of flooding on the estuary
- protection of local areas leads to formation of bays between the areas
- bays develop= wave pressure on headlands will increase
- maintenance cost to high?
- bays develop= wave pressure on headlands will increase
- unsustainable?
- groynes trap sediment, increasing width of beaches
- DEFENCES
- Bridlington
- 4.7 KM long sea wall
- timber groynes
- Mappleton, 1991: two rock groynes and 500 m revetment
- £2M, to protect the village and coastal road
- Withernsea, groynes and a sea wall
- riprap in front of sea wall after damage in 1992 storm
- Hornsea: concrete sea wall, timber groynes, rip rap
- (South) Hornsea: gabions to protect caravan park
- Easingtion Gas Terminal: revetment
- (east) Spurn Head: groynes and rip rap
- Bridlington
- POSSIBLE SCHEMES ALL HAVE PROBLEMS
- SMP for Holderness for next 50 years is to 'hold the line' and 'do nothing' for Bridlington, Hornsea, and Mappleton.
- 'unpopulated'
- Coastal realignment for caravan parks further inland
- more sustainable, wont endanger businesses
- but sometimes isn't possible IE farmland, or no more land
- more sustainable, wont endanger businesses
- sea wall proposed for the Easington Gas Terminal.
- £4.5 M
- reduce sediment flow to south, increasing erosion at the village of Easington.
- pop. 700 people
- longer sea wall? £7M
- offshore reefs made from concrete- filled tyres to protect coastline?
- act like breakwaters
- harm the environment?
- worked in USA
- act like breakwaters
- SMP for Holderness for next 50 years is to 'hold the line' and 'do nothing' for Bridlington, Hornsea, and Mappleton.
- SUCCESS??
Similar Geography resources:
Teacher recommended
Comments
No comments have yet been made