Sandbanks Dorset : coastal managemenrt Flashcards

1
Q

what is coastal landscape management at Sandbanks in Dorset an example of?

A

Human activity intentionally causing change within in the coastal landscape system.

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2
Q

what is heavily managed in Sandbanks in Dorset?

A

the Sandbanks peninsula, which separates much of
Poole Harbour from Poole Bay

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3
Q

who does the responsibility of the Sandbanks peninsula’s heavy management lie with?

A
  • Poole Harbour Commissioners
  • Poole Borough Council and the Environment Agency
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4
Q

what do the strategies employed at Sandbanks form?

A

part of the Two Bays Shoreline Management Plan, based on the sediment cell covering Poole Bay and Christchurch Bay

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5
Q

how is climate change a reason for Sandbanks’ need for management?

A

sea level rise would not only cause flooding of many properties, but could breach the peninsula at its lowest and narrowest point at the junction of Shore Road and Banks Road. This would effectively cut off the end of the peninsula from the mainland

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6
Q

how much is the damage estimated at if no management strategies are applied?

A

£18m of damage to residential properties will occur in the next twenty years

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7
Q

how are the residential properties on Sandbanks a reason for its need for management?

A

they are in high demand and command premium prices; large, detached houses command prices in excess of £10m, with many luxury apartments costing over £2m

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8
Q

how is the high amount of commercial properties built on Sandbanks a reason for its need for management?

A

these are very high value
- including Sandbanks Hotel and Haven Hotel

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9
Q

what do Sandbanks Hotel and Haven Hotel do?

A

prrovide significant employment opportunities
- generate spending in the local economy

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10
Q

how is the beach at Sandbanks a reason for its need for management?

A

it is a major tourist attraction. It has a Blue Flag award for water quality, and being gently sloping it is safe for family swimming

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11
Q

what physical property of the Sandbanks peninsula is a reason for its need for management

A

provides protection and shelter from waves for Poole Harbour, which is therefore a popular and safe place for water sports, such as wind-surfing, sailing and water ski-ing. The harbour is also home to numerous yacht clubs and marinas, such as Salterns.

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12
Q

what is at the end of the Sandbanks peninsula

A

the entrance to Poole Harbour

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13
Q

what is Poole Harbour used by?

A

cross-channel ferries and catamarans, as well as commercial ships carrying goods like timber

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14
Q

what would happen to Poole Harbour if no intervention took place, that makes it a reason for Sandbanks’ need for management?

A

longshore drift of beach sediment could cause the harbour entrance to become clogged and shallow

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15
Q

what have been constructed at Sandbanks in order to maintain a deep and wide beach?

A

rock groynes, to minimise the movements of sediment along the beach at Sandbanks by longshore drift

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16
Q

what does the rock groynes minimising longshore drift’s movement of sediment along the beach at Sandbanks mean?

A

this not only restricts sediment from entering the harbour entrance, thereby keeping access free for shipping, but also absorbs wave energy, and reduces rates of erosion.

17
Q

what are erosion rates estimated at without the implementation of rock groynes?

A

about 1.6 m per year

18
Q

hat has been used at Sandbanks to preserve beaches?

A

beach recharge

19
Q

how is beach recharge working at Sandbanks?

A

sand dredged from offshore is sprayed onto the
beach, a process known as ‘rainbowing’ adding to its size

20
Q

how much does rainbowing in beach recharge currently cost at Sandbanks?

A

about £20/m cubed

21
Q

what is a cheaper alternative to rainbowing that has recently been trialed at Sandbanks?

A

dumping sediment dredged from the harbour just offshore

22
Q

how much does dumping sediment dredged from the harbour just offshore instead of rainbowing at Sandbanks cost?

A

only £3/m cubed

23
Q

what will natural currents eventually do to the sediment dredged from the harbour just offshore that was dumped?

A

transport this sand onshore where it will help to build up beaches

24
Q

how much sediment in total has been added to Poole Bay beaches?

A

over 3.5 million m cubed of sediment

25
Q
A