Case Study New Castle

Question 1

Population

Answer 1

7,500

Question 2

Bay name and length of beach

Answer 2

Dundrum Bay, 8km

Question 3

Population rise in summer months

Answer 3

15,000

Question 4

Describe beach

Answer 4

Shallow, wide

Question 5

Constructive waves dominate except during?

Answer 5

Storms

Question 6

What engineering strategy is used in Newcastle

Answer 6

Hard engineering

Question 7

Strategies used in Newcastle

Answer 7

Rock armour, gabions, sea wall, groynes

Question 8

purpose of groynes

Answer 8

To trap and hold sediment

Question 9

What happened to the groynes

Answer 9

Decayed

Question 10

Purpose of gabions

Answer 10

Protect the recreation ground built over the beach

Question 11

What do gabions do?

Answer 11

Water enters the cage and dissipate the wave energy

Question 12

What happened to the gabions

Answer 12

First set had badly decayed

Question 13

Purpose of rock armour

Answer 13

Control erosion

Question 14

What does rock armour do

Answer 14

Dissipates wave energy

Question 15

Sea walls evaluation (4)

Answer 15

Can be expensive, can be ugly, need deep foundations, the move the erosion elsewhere

Question 16

Groynes evaluation (2)

Answer 16

can be very cost effective, need continual repair and maintenance

Question 17

Gabions evaluation (4)

Answer 17

Cheap, good short term solution, break apart easily, debris and pollution can get trapped

Question 18

Beach nourishment evaluation (2)

Answer 18

• can have the least environmental impact

- can be very expensive