Coastal Management Strategies
- Created by: Revisonf
- Created on: 06-01-14 19:33
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- Coastal Management Strategies
- HARD ENGINEERING:
- Man made structures set up to control the flow of the sea and reduce flooding/erosion.
- Sea wall - A wall made of hard material that reflects waves back to the sea
- Prevent erosion on the coast and acts as a barrier for flooding
- Creates strong backwash which erode the underwall. They're also very expensive to build and maintain
- Rip rap - huge boulders that are piled along the coast.
- Absorb wave energy therefore reduce erosion and flooding
- They may be moved around by strong waves meaning they need to be replaced.
- Gabions - rock-filled cages built at the foot of cliffs
- Absorb wave enegry and so reduce erosion
- Expensive to build and create a huge backwash.
- SOFT ENGINEERING:
- Beach replenishment - extra sand is added from else where
- Creates wider beaches which slow down waves, provides greater protection frm floods.
- It is very expensive and needs to be repeated. Also can ruin habitats.
- Managed retreat - Remove any existing defence and allow the land behind to flood.
- The land will become a marshland and is fairly cheap.
- People may disagree over what land is allowed to be flooded.
- Beach replenishment - extra sand is added from else where
- HARD ENGINEERING:
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