Coastal Engineering Flashcards
Hard engineering
Building man made structures to manage coast
Soft engineering
Building environmentally friendly management solutions
Gabions
£350/meter,cages of boulders on cliff wall to buffer erosion and break waves, cheap and effective but ugly
Dune regeneration
£2k/100m, plant marram grass and fence areas to develop dune that protects coast, cheap and natural but people don’t want to be fenced out
Rock armour
£1k-4K/meter, piles of boulders to break waves, cheap and good for fishing, expensive transport and ugly
Marsh creation
£5-10K per acre of arable land, let areas flood to make salt marsh that protects coast, cheap and makes habitats, land lost and farmers have to be payed for land
Groynes
£5K/meter, wood or rock structure out to sea to trap sediment and widen beach, big beach so tourist and good for fishing, sand doesn’t get to other coast so only moves problem
Sea wall
£10M/km, rock barrier with curve to stop a water, effective but ugly and expensive