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18 Cards in this Set
- Front
- Back
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What type of engineering does Holderness use? |
Hard Engineering |
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Why is Holderness using hard engineering on the coastline? |
To reducethe effects of erosion.
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How long is the Holderness coastline? |
11.4 km
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How is Bridlington is protected from erosion and flooding?
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By a 4.7 km long sea wall as well as wooden groynes.
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What is Hornsea (a village) protected by from erosion and flooding? (3)
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1. Sea wall
2. Wooden groynes 3. Rock armour. |
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Why are there groynes at Withernsea? |
To create wider beaches.
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What was placed in front of the sea wall at Withernsea after it was damaged in a severe storm in 1992? |
Some rock armour.
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What defenses at Mappleton were built in 1991 (including other defenses)? |
2 rock groynes
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How much did the defenses at Mappleton cost? |
£2 million
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Why were the defenses at Mappleton built? |
To protect the village and a coastal road from erosion and flooding.
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What side of Spurn Head is protected by sea defenses? What are the names of the defenses? (2) |
The eastern side of Spurn Head.
It is protected by: 1. Groynes 2. Rock armour. |
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What else do the groynes and rock armour (that are at Spurn Head) protect? |
Also protects the Humber Estuary behind Spurn Head.
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Groynes protect local areas but what problem do they cause?
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They cause narrow beaches to form further down the Holderness coast.
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As the beaches narrow what does this increase? What can this then lead to? Give an example. |
This increases erosion down the coast.
This can lead to land falling into the sea. Example: Cowden Farm (south of Mappleton) |
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As the sea defenses on the Holderness work erosion decreases, what else decreases? (2) |
1. The material produced from the erosion.
2. And from it being transported south. |
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What does reducing the amount of material that’s eroded and transported south result in?
And why? |
Increases the risk of flooding in the Humber Estuary.
Because there’s less material to slow the floodwater down. |
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Which areas (apart from the Humber Estuary) are at risk from less material being added to it? (2) And why? |
1. Lincolnshire coast
Why? Rate of coastal retreat is increased. 2. Spurn Head Why? Risk of being eroded away. |
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Bays are forming between the protected areas and the protected areas are becoming headland which is eroded more heavily.
What does this mean? |
This means maintaining the defenses in the protected areas is becoming more expensive.
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