Coastal Management at Holderness
- Created by: emily_w
- Created on: 10-03-15 09:04
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- Coastal Management in Holderness
- Beach nourishment
- Where?
- Hornsea
- How?
- Dredged sand added to beach
- Wider beach protects the cliffs
- Areas downdrift are protected by adding sediment to coastal system
- Negatives
- The sand has to be replaced frequently because so much of it can be removed in one storm
- Where?
- Relocation and Coastal Zoning
- How?
- People are encouraged to move from at-risk areas to safer places
- Receive help with costs
- Council decide which places are allowed to erode
- At-risk zones refused planning permission
- Residents agree to demolish old home and build a new one, no larger than the old
- Farms can be built in rural areas, as long as they are used for farming
- People are encouraged to move from at-risk areas to safer places
- Where?
- People are encouraged to move to places like Bridlington
- Negatives
- Communities are split up
- People who run local businesses may lose their livelihoods
- How?
- Groynes
- How?
- Wooden groynes trap sediment from longshore drift
- Waves forced to travel further up the beach and friction reduces their energy
- Town and cliffs are protected because the beach is preserved
- Costs £2 million but land is protected
- Wooden groynes trap sediment from longshore drift
- Where?
- Groynes built at Hornsea
- Negatives
- Places downdrift will be starved of sediment, because material is taken away by longshore drift but not replaced
- Mappleton almost disappeared: erosion rate 4m/year by 1990
- Places downdrift will be starved of sediment, because material is taken away by longshore drift but not replaced
- How?
- Recurved walls
- How?
- Recurved sea wall dissipates wave energy
- Sea front is protected, so property is not devalued and tourism jobs are saved
- Due to the benefits, the cost is justified
- Cost of £6.3 million, but lasts a long time
- Where?
- Withersea
- Negatives
- Noise pollution
- construction
- Waves are louder when they break against the wall
- Impacts on tourism
- Smaller promenade
- View from hotels limited
- Tourists find the rock armour at the wall's base unattractive
- Noise pollution
- How?
- Rock Revetment
- How?
- Large granite boulders protect Easington's gas terminal
- Boulders are placed like a wall along the shoreline
- Wave energy is absorbed by air gaps and large surface area of boulders
- Where?
- Easington
- Negatives
- Expensive, though they are long-lasting
- Aesthetically displeasing
- How?
- Beach nourishment
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