Soft engineering and types of coastal management

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  • Created by: emily_w
  • Created on: 26-04-14 15:33
What are the disadvantages of dune regeneration?
Time consuming, easily damaged by storms, people may trespass
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What is the cost of beach nourisment?
£3000 per metre
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How does dune regeneration work?
Dunes are fenced off and Marran grass is planted to stabilise the sand
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What is the disadvantage of beach nourishment?
Beach needs near-constant maintenance afterwards
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How much does dune regeneration cost?
£2000 per 100m
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What are the types of soft engineering?
Beach nourishment, dune regeneration, salt marsh creation, managed retreats
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What are the advantages of dune regeneration?
Quite cheap and maintains natural environment
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What is beach nourishment?
When sand/shingle is added to the beach to make it higher
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How much does salt marsh creation cost?
£5,000-10,000 per hectare
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What are the advantages of beach nourishment?
Cheap and easy to maintain, increases tourist potential
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What is managed retreat?
When old sea defences are abandoned and new ones built inland
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What is salt marsh creation?
When low coastal areas are allowed to flood to become salt marshes
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What are the disadvantages of managed retreats?
People lose homes, businesses and land, money spent on original defence wasted
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What does "hold the line" mean?
Keep up and improve existing defences
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What are the advantages of salt marsh creation?
Cheap and create habitats
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What are the advantages of managed retreats?
Salt marshes are created, flooding reduced in some areas
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What are the disadvantages of salt marsh creation?
Need to compensate for land loss
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How do you work out the cost of managed retreats?
original defence material+cost of land flooded
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What does "Advance the line" mean?
Build new, higher, better defences
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What is the result of a "no intervention" management plan?
Erosion happens, but land is built up elsewhere
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Other cards in this set

Card 2

Front

What is the cost of beach nourisment?

Back

£3000 per metre

Card 3

Front

How does dune regeneration work?

Back

Preview of the front of card 3

Card 4

Front

What is the disadvantage of beach nourishment?

Back

Preview of the front of card 4

Card 5

Front

How much does dune regeneration cost?

Back

Preview of the front of card 5
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