soft engineering

Cards (12)

what is beach nourishment?
Addition of sand or pebbles to an existing beach to make it higher or wider. the sediment is usually dredged from the nearby seabed
what are pros of beach nourishment?
Cheap
easy to maintain
looks natural, blends in with existing beach
bigger beach= increases tourist potential
give cons of beach nourishment? 
constant maintenance needed because of the natural processes of erosion and LSD
what is dune regeneration?
marram grass planted to stabilise dunes . areas can be fenced in to keep pepole off newly planted dunes
give pros of dune regeneration?
Maintains a natural coastal environment
provides important wildlife habitats
cheap
sustainable
give cons of dune regeneration?
time consuming to plant marram grass
people may respond negatively to being kept off certain areas
what is marsh creation?
a form of MANAGED RETREAT, by allowing low-lying coastal areas to be flooded by the sea. the land then becomes a salt marsh
give pros of marsh creation?
CHEAP
creates a natural buffer to powerful waves
wildlife habitat
give cons of marsh creation?
agricultural land is lost\
farmers or landowners need to be compensated
what is do nothing? 
doing nothing'' to protect the coastlinee
give pro of do nothing?
low cost- no money spent on new engineering methods or maintaining current ones
what is a con of doing nothing? 
flooding can cause lots of DAMAGE