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Field trip follow-up
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What was learnt on the field trip?
Did anyone get any pictures?
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BookletsPlease copy over the notes/sketches on
management typesThen cut out and glue in your answers to the
questionnaire and your field sketches
Finally, please annotate your maps to show how the land is used (use evidence + your memory) and what coast defences there are
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What happened here?
Noel Jenkins
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Coastal defence match-up Sea Walls Groynes Rock armour Revetments Gabions Replenishment Cliff reshaping Managed retreat
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Reasons to protect the coastline
Social
Environmental Economic
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Barton-On-Sea & HighcliffeHampshire/Dorset coastlineThe geology is very soft. The cliffs are layers of sand and clay – very
soft rocks, unresistant to erosion.Water from rain soaks in and makes the
coastal erosion worse by allowing material to slip and collapse.
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Barton-On-Sea & HighcliffeBeach management is a political issueHighcliffe is in Dorset, Barton in HampshireThe two councils do not agree about coastal
management
What one council does to protect its coast, has a big impact on the other coastline – e.g. Groynes trap sediment which starves beaches downcoast, meaning they are more vulnerable to erosion
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What defences are there?
Make notes on Highcliffe vs Barton defences
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How is the coast being protected at Highcliffe?
Groynes, Cliff reshaping and Beach Recharge at Highcliffe
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Groynes and Beach Recharge at Highcliffe
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Beach Replenishment and Cliff Stabilisation at Highcliffe
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Rock Armour, Beach Reshaping and Cliff Stabilisation at Barton
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Coastal Protection along Highcliffe, Dorset
And what defence is this?
Coastal Management Techniques at Highcliffe, Dorset
What defences are here?
What defences might be here?
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Same problem, two places, two different solutionsHighcliffe and Barton coasts are managed
differently: one is protected strongly, the other is managed retreat
What do you think influences the decision makers who decide how to protect coastlines?
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What has happened here? Why?What has happened here? Why? What is this? Why has it been built? How does it work?
Land use here:This is the border between Hampshire and Dorset. Why is that important?:
Land use here:
Coastal Management along Highcliffe and Barton on Sea
Barton on Sea, Hampshire
Highcliffe, Dorset
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How do they decide?It all comes down to land-use, the value of the
land that needs protecting
Decision makers weigh up the costs of coastal management, against the benefits of protection.
But each area is only responsible for itself, they do not interact to see if they are affecting another coastline
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Barton side.
No defences.
No houses, just Naish Farm camp site.
Cliffs are retreating inland by several metres a year.
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Highcliffe side.
Golf course and housing on the cliff top.
Beach defences visible.
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Sketch of land use at Highcliffe and Barton-on-Sea
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Exam Q : HWDescribe and explain the coastal
management strategy at Highcliffe compared to Barton-On-Sea. [4marks]
Describe the effects of Highcliffe’s coastal management strategy on Barton on Sea [4 marks]
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Sea Walls Groynes Rock armour Revetments Gabions Beach nourishment Beach reshaping/
stabilisation Managed retreat
Match them up
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Coastal Management Techniques at Highcliffe, Dorset