Outline the processes which lead to the development of barrier beaches.
- AQA - A-Level Geography - Question 3 - 2018 - Paper 1
Question 3
Outline the processes which lead to the development of barrier beaches.
Worked Solution & Example Answer:Outline the processes which lead to the development of barrier beaches.
- AQA - A-Level Geography - Question 3 - 2018 - Paper 1
Step 1
Formation of a Barrier Beach
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
A barrier beach usually forms as an extension to a spit. Longshore drift moves sediment along the coastline until there is a change in the coastline. A spit develops, usually in a bay and once the spit develops across the whole bay, a barrier beach forms.
Step 2
Stability of Barrier Beaches
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Barrier beaches are unlikely to form in estuaries as the surrounding force of freshwater will always keep part of the estuary clear.
Step 3
Vegetation's Role in Stabilization
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Colonisation by vegetation can stabilise the barrier beach and trap further sediment, keeping the barrier beach above sea even at high tide.
Step 4
Influence of Climate
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Depending upon the climate, the landward side may be colonised by mangroves in the still lagoon, which adds further stability to the barrier beach.
