Coasts Flashcards
Holderness coast (erosion and factors affecting erosion)
Europe’s fastest eroding coastline 1m a year
Annual rate of erosion 2m a year
Bedrock made of unconsolidated boulder clay
Long wave fetch from North Sea
Destructive waves
Management in Holderness coast Mappleton
2 rock groynes and rip rap
Blocks of granite from Norway
Cliff has been stabilized through vegetation beach has been retained
There has been more erosion along the coast, at Great Cowden
Guinea coastal flooding
Rapid rates of erosion
Loss of trees and infrastructure
Caused by rising sea levels, loss of mangrove forests in Kabrousse, less defence
Biodiversity is at risk, marine turtles and manatees
Tourism is at risk
Netherlands deltawerks
13 dams
Flooding farmlands
Polders and dykes
Provides flood protection, drinking water and irrigation
Jurassic coast
Seaward dip (Portland limestone)
Easier to erode Walden sediment
Steeply dipping chalk forms back
Sea eroded through limestone forming a cave