1.4.a Sandbanks, Dorset 0.0 / 5 ? Geography1 CoastsA2/A-levelOCR Created by: lee8444Created on: 31-01-20 10:14 Reasons for management Large number of high value properties Sandbanks Hotel provides jobs Fourth most expensive street per metre squared in the world Houses valued at over £10 million Apartments valued at over £2 million Major tourist attraction, Blue flag award Protection for Poole Harbour Climate chnge predicts 60cm increase in next 100 years £18 million of damages predicted for the next 20 years 1 of 3 Management Strategies Rock groynes costing hundreds of thousands of pounds each Beach recharge Dredged from offshore Sprayed onto beaches (rainbowing) This can cost £20 per cubic metre Can be just £3 per cubic metre if dumped just offshore and letting natural processes take the sediment onto the beach Total of 3.5 million cubic metres have been added to Poole Bay beaches 2 of 3 Impacts on coastline Rock groynes Maintain deep wide beach Minimises longshore drift this keeps Poole Harbour access free Erosion would be 1.6 metres per year without the groynes Beach recharge Reduces the impact of waves if slightly offshore allows fr erosion rates to stay high whilst maintaining the coastline Keeps the aesthetic profile of the blue flag coast Impacts the sediment budget in small sediment cells 3 of 3
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