Durlston bay Swanage Dorcest Flashcards
1
Q
What defence methods were in place?
A
Concrete sea wall
Groynes
Beach nourishment
Rock armour
2
Q
How big is the seawall?
A
1.8k
3
Q
When was the rock armour introduced?
A
1980s
4
Q
How much sediment is used?
A
2005: 90 000 meters squared costing £2.2 million
40 000 meters squared every 2 years
5
Q
What does the sea wall do?
A
Reduce undercutting in the north bay
6
Q
What does the rock armour do?
A
Break wave power
7
Q
What does the beach nourishment do?
A
Increase beach width. Replaces sediment taken by LSD (tourism)
8
Q
What does cliff regrading mean?
A
Changing the vertical angle of this cliff
9
Q
When was the rip rap added?
A
After 10m of coast was lost in 2 years
10
Q
What is in place to stop the cliff becoming saturated?
A
Water pipe system (reduces slumping)
