Chapter 5 - Costal Change And Conflict Flashcards
What is the difference between concordant and disconcordant coastlines
Concordant move with the coastline whereas disconcordant are at 90° to the coast
What are the main costal landforms caused by erosion
Caves Arches Stacks Stumps Headlands
What are the features of a destructive wave
Weak swash, strong backwash
What are the main types of costal erosion
Hydrolic action
Abrasion
Attrition
Solution
what are the sub aerial processes (weathering)
mechanical
chemical
biological
mass movement
what are the four ways sediment moves
longshore drift
transportation
deposition
what is the affect of swash and backwash on sediment on a beach
swash pushes sediment in. backwash removes it
how are cured beaches formed
waves bending or refracting when entering a bay
what beach features does longshore drift causes
bars and spits
what rocks are present at Holderness and what is the effect of them
Soft clay erodes leading to a receding coastline by around 2m a year
what is done to prevent loosing costal settlements
hard engineering such as groynes
what are the two engineering types with examples
HARD
sea wall
groynes
SOFT
beach replenishment
slope stabilisation