Hard and soft engineering coastal managment Flashcards
What is hard engineering?
Man-made structures to stop erosion or flooding.
What is a sea wall?
A big wall that stops waves hitting land
One advantage of a sea wall?
Very strong and protects buildings.
One disadvantage of a sea wall?
Very expensive and can look ugly.
What is a groyne?
A barrier that stops sand moving along the beach.
What is soft engineering?
Natural ways to protect the coast.
One advantage of groynes?
Keeps the beach wide, good for protection and tourism.
One disadvantage of groynes?
Other places get less sand and more erosion.
What is rock armour?
Big rocks placed on the beach to absorb wave energy.
What is beach nourishment?
Adding sand to the beach to make it higher and wider.
One advantage of beach nourishment?
Looks natural and protects land.
One disadvantage of beach nourishment?
Needs doing often and costs money
What is dune regeneration?
Planting grass and putting fences on dunes.
One advantage of dune regeneration?
Natural and cheap.
One disadvantage of dune regeneration?
Slow and easily damaged.
What is managed retreat?
Letting the sea flood some land on purpose.
: One advantage of managed retreat?
Cheap in the long run, creates nature areas.
One disadvantage of managed retreat?
People may lose homes or land.
