UKs physical landscapes Flashcards
Solution
Soluble materials are dissolved in the water and transported
Happisburgh case study
frequented coastal erosion
groynes, rock armour, beach nourishment
left to its own devices
Boscastle, Cornnwall case study
drainage basin made of impermeable rock
£10 million flood defences
widened the river
tree management
August 2004
Suspension
Tiny particles like clay are picked up and carried downstream by force of the water
Ox-bow lakes
erosion narrows neck of meander eventually cutting it off
often when flooded river will cut through the neck
Flood plains
low-lying
lower course
area of flat land alongside a river
used for overspill of the river floods
Saltation
particles are smaller therefore bounced along river bed
Devon case study
met office moved to Devon
lower cost
close to london
increased population in Devon
pressure on housing
Traction
large particles like boulders pushed, rolled along river bed by force of water
Meanders
river erodes laterally
forms large bends
slower flow creates deposition on side
faster flow erodes other side creating bends
Discharge
volume if water which flows through river
Longshore drift
happens when waves break at an angle to the coast
transports sediments
Constructive waves
low energy waves
weak backwash
strong swash
results in buildup of material on shore
Destructive waves
high downward force
strong backwash
large wave height
short wave length
weak swash
Human activates that effect the coast
agriculture
housing
office development
industries
coastal management
