3.1.3.6 Case studies Flashcards
How long is the Holderness coastline
61km
What are the majority of the Holderness cliffs made of
Boulder clay
What type of waves is the Holderness coastline exposed to
Destructive waves from the North Sea
How does erosion occur in Holderness
- Some places have reduced over 10m/year (Great Cowden)
- Holderness has retreated by 4km in 2000 years
- 30 villages have been lost
How does mass movement occur in Holderness
- the boulder clay is vulnerable to lubrication
How does transportation occur in Holderness
- rapid erosion of cliffs means there is plenty of sediment
- north to south longshore drift
How does deposition occur in Holderness
- where the ocean current meets the Humber river
- Spurn point
What coastal landscapes are evident at Holderness
- sand dunes around spurn head
- spit (Spurn Head)
- slumping cliffs
- caves arches stacks and stumps (Flamborough Head)
Why does Holderness need to be managed
- gas terminal at Easington is 25m from the edge
- 80,000m squared of farmland is lost each year
What percentage of Holderness is protected by hard engineering
15%
How does Bridlington display hard engineering
- 5km sea wall
- timber groynes
How does Mappleton display hard engineering
- two groynes
- 500m revetments
- cost £2mn altogether
How is Holderness not sustainable
Schemes at Mappleton increased erosion at Cowden farm
What does the SMP recommend for Holderness
- hold the line at certain places
- do nothing at low value places
Why is the Holderness SMP unpopular
People who live at the low value places want protection
