EQ2: How do characteristic coastal land forms contribute to coastal landscapes? Flashcards
waves
constructive (North East- Druridge Bay) or destructive (South West- Cornwall).
erosion
influenced by wave type, size and lithology:
- hydraulic action
- abrasion
- attrition
- solution
erosional land forms
- wave cut notches
- wave cute platform
- cave, arch, stack and stump sequence
sediment transport and deposition
infuenced by angle of wave attack, rides, currents and long shore drift
depositional landforms
- beaches e.g. Laguna beach
- spits e.g. Spurn Head
- bars e.g. Slapton
- Barrier beach e.g. Chesil Beach
- cuspate foreland e.g. Dungeness ( contains 40% of all British shingle).
weathering
mechanical (freeze-thaw), biological (vegetation) and chemical (carbonate)
mass movement
blockfall (St. Oswald’s Bay), rotational slumping and landslides
mass movement landforms
- rotational scars
- scree slopes
- terraced cliff profiles
sediment cell
11 in the UK. a stretch of coastline where sediment is sourced (eroding cliffs), transported (transfer zones e.g. longshore drift) and deposited (creates landforms e.g. spits)
Holderness Coast sediment cell
source: Holderness Coast
transfer zone: longshore drift with addition of sediment from Humber Estuary
sink: Spurn Head
positive feedback
changes balance until a new equilibrium is reached
negative feedback
usually helps maintain balance within the system