LSD, Waves, Storm Surge, Isostatic Recovery Flashcards
What is Longshore drift?
Sand/sediment moving along the beach.
What is swash?
The movement of Sand/Sediment up the beach by the wave.
What is backwash?
The movement of Sand/Sediment back down the beach by the wave.
What are the 5 features of destructive waves?
- Occur in storm conditions
- have high energy
- Long fetch (travelled a long distance)
- responsible for erosion
- greater backwash than swash.
What are the 5 features of constructive waves?
- Occur in calm conditions
- have low energy
- transport material by Longshore drift
- responsible for deposition
- greater swash than backwash.
What 3 landforms are created by Longshore Drift?
- Spit
- Bar
- Tombolo.
Why is Cornwall more vulnerable to coastal erosion?
- Destructive waves
- Long Fetch
What is a storm surge?
Change in sea level that is caused by a storm
.What causes a storm surge?
Low air pressure causes a bulge in the sea. Bulge is pushed forward by the wind.
If a storm surge happens during low tide coastal flooding is highly likely T/F?
true
What storm surge did we look study?
December 2013.
Why is the south-east coast of the UK more vulnerable to storm surges?
North sea, Funnel effect between the UK and Europe
What are 2 physical reasons why London is vulnerable to flooding?
- Storm surges
- Narrowing of the land (funnel effect)
What are the 2 human reasons why London is vulnerable to flooding?
- Large population
- Lots of buildings along the Thames.
What is an isostatic recovery?
The weight of the ice acted like a sea-saw and pushed down Scotland and raised the South East. Now that the weight of the ice has gone Scotland is rebounding and the South East sinking back down.
