Coasts case study- Chesil beach Flashcards
1
Q
How was Chesil beach originally thought to have been formed?
A
Through longshore drift
2
Q
If the beach had been formed by longshore drift, what would be observed?
A
The size of the sediment would be smaller further East, as you go along the beach
3
Q
Where is Chesil beach located?
A
Dorset
4
Q
What characteristics can be observed about the sediment on Chesil beach?
A
The sediment is uniform in size
5
Q
How was Chesil beach formed?
A
- rapid sea level rise 20,000-14,000 years ago
- material transported by waves (via saltation & solution) from offshore zone onshore where it began to act as a barrier beach
6
Q
What was the influence of rising water levels?
A
- sediment deposits were eroded
- a barrier beach was formed
7
Q
How is Chesil beach modified now?
A
-by modern longshore drift
8
Q
What is the effect of storm events on Chesil beach?
A
Beach is overtopped
9
Q
Give an example of overtopping at Chesil beach
A
2009, eroded pieces of clay and washed up elsewhere
