Coasts Case Studies

Question 1

What is the case study for intentional change?

Answer 1

Sandbanks, Dorset
(Poole harbour)

Question 2

Summarise some points about the need for management in Sandbanks

Answer 2

• large number of high value properties e.g Hotels that generate spending and tourism
• beach is a major tourist attraction, Blue Flag award for water quality and safe for family swimming
• need of shelter for Poole harbour

Question 3

What are some uses of Poole Harbour?

Answer 3

• safe for water sports
• yatch clubs &marinas
• fishing industry
• need to get in and out

Question 4

How could climate change affect the Sandbanks area?

Answer 4

•sea levels predicted to rise 0.6m in next 100 years, causing flooding
• peninsula flooded and cut off from mainland
• £18m cost damage to residential properties in next twenty years

Question 5

What are the management strategies at Sandbanks?

Answer 5

Rock grounds
Beach recharge, sand dredged from offshore and sprayed onto beach

Question 6

What is the purpose of rock grounds at Sandbanks?

Answer 6

To minimise sediment movement by longshore drift and increase deposition, and to restrict sediment from entering the harbour. it also reduces erosion rates and absorbs wave energy energy by building up the beach from deposition.

Question 7

What is the effect of rock groynes

Answer 7

Stabilises it, and protects the harbour. Protects the valuable land behind.
But can starve Henisbury head of their sediment down the coast. It

Question 8

What is the case study for unintentional change?

Answer 8

New Zealand, Mangawhai to Pakiri

Question 9

What economic development is taking place at Mangawhai to Pakiri coastline?

Answer 9

Sand mining from nearshore zone as sand is high quality and essential resource.

Question 10

What are the uses of the sand from sand mining?

Answer 10

It has a wide range of construction uses like concrete making a glass making. It is also used to replenish Auckland touristic beaches with many holiday homes being built in the area to help tourism.

Question 11

What is the impact on processes from sand mining?

Answer 11

Less position occurs as there is less friction between the beach and waves
Erosion rates increased as less sediment to absorb wave energy
Spits and sand dunes in our vulnerable to more erosion
Loss of vegetation makes them susceptible to wind erosion

Question 12

Example of a landform at the North Yorkshire coast

Answer 12

Shore platform at Robin Hoods Bay
Filey bay
Stack at Selwicks Bay
Scarborough Beach
Ravenscar Headland
Flamborough Head

Question 13

Geology at Saltburn to Flamborough head

Answer 13

FH made of chalk
Further north, resistant limestone, weak clay.