Unit 2: Coastal Landscape- The Holderness Coast Flashcards
1
Q
How long is the Holderness coast?
A
61 km long
From Flamborough Head ( headland) to Spurn Head ( spit)
2
Q
What is the annule rate of erosion
A
1.8 m as erosion caues the cliffs to collape
Grate Cawden rate= 10m per year
3
Q
WHat are cliff mostly made out of?
A
Boulder clay-> eality eroded likley to slump when wet causing cliff collapes
4
Q
Whay do the waves have such a strong erosional power?
A
- Faces the prevaling wind direction wich brings wves from the north east form Noewegain sea
- Waves increase in power over long distnaces
5
Q
WHat is the dircetion of LSD and what does this cause?
A
Eroded material oves southa long the coast by LSD insted of staying in one place exposing a nee cliff area to erosion cauinf the coastline to retreat.
6
Q
Why is the Holderness coast protected?
A
- Town + villages:Hornsea pop +8,000. Withernsea pop + 6,000 and Mappleton
- Important infastructure e.g. B1242nwhich links many towns + buisnesses along the coast
- Gas terninal at Easington wich supplys 25% of UK’s gas on the right on edge of cliff
=>Groynes at - Mapplleton, Horsea and Withernsea
7
Q
What problems have defences caused futher down the coast?
A
- Groynes-> Terminal groyen syndrome= local area protected however futher down the coast beaches narrow e.g. Great Cowden ( south of Mappletion) lots of Caravan Parks and farms at risk of falling into sea.
- Material produced at Holdenress usally transported South to Humber Estury down to Linconshire coast increasingthe flood rick in that Estury as there is less material to slow floodwater down. Incressed rate of Erosion at linconshire as there is less new material being added.
- Spurn head at risk of being erored becauese less sedment it being added to it
- Bays are forming between the protected areas and the protected aeaer are becomeing headlands wiach are erroeded more haeily= maintiang defences in protected areas = more expensive
8
Q
A
