coastal protection Flashcards
1
Q
Groynes
A
look like wooden ‘fences’ designed to stop material from moving along the beach
creates problems further down the beach as no sand is being moved
lasts 20/30 years
2
Q
beach nourishment
A
sand added to replace sand washed away
expensive & needs to be replaced
little environmental impact & larger beach for tourists
3
Q
rock armour
A
boulders, 10 tonnes or more, are piled up along shoreline
ugly
expensive
long lasting (over 10 years)
4
Q
beach profiling
A
beach material at the base is moved back up to absorb more wave energy
expensive from machinery needed
no new material needs to be bought
5
Q
Gabion
A
steel mesh cages filled with rocks to absorb energy of waves
have to be replaced
moveable
cheap
6
Q
sea wall
A
concrete walls to stop erosion of the coast
expensive
ugly
