Holderness Flashcards
Length of holder nests coast
61km from flamborough head to spurn head
How fast is holderness eroding a year
1.8metres of erosion a year approx.
What mass movement occurs at prevented
Slumping from wet condotions
What way is sediment transported
Southwards by prevailing winds
Main process of sediment
Longshore drift
6 main landscape features at holderness
Spits (spurn head)
Headland and wave cut platforms
Beaches
Slumping cliffs
How much has holderness retreated in 2000 years
4km
3 problems at holderness coast
Loss of settlements - 80,000m2 of farmland lost
Loss of infrastructure - gas terminal only 25m2 from cliff edge
Loss of SSSI and habitats
How much of holderness is protected by hard engineering
11.4km of the 61km
What hard engineering is used
-4.7km sea wall at Bridlington (popular tourist spot)
-£2 million rock groynes at Hornsea (protect village and road)
-Groynes and rip rap at spurn head
Issues with groynes
-Trap sediment increasing erosion further down shore
-Formation of bays increasing wave pressure on headlands (wave refraction)
Where is Pete set bay
East sussex
What is increasing from sea level rise at perversely
Wave action
Longshore drift
Storm frequency
What do the sea defences currently protect at Levenshtein
Permanent flooding of a 50km2 area
10,000 properties
2 SSSI areas
Recharge at pevensey
LSD annually removes 25,000m2 of sediment up shore
5,000m2 is moved around by lorries
20,000m2 is left in situ to naturally redistribute itself
