Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Geography-Costal systems and landscapes > Coastal management > Flashcards

Coastal management Flashcards

You may prefer our related Brainscape-certified flashcards:
U.S. Geography flashcards World Geography flashcards
1
Q

How much of the worlds population live near the coast?

A

. Half of the worlds population live within 60km of the coast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How many of the total of large cities are at the coast?

A

3/4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Why do we manage coastal areas?

A

. tourism
. industries
. coastal protection
. fisheries
. transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is hard engineering?

A

artificial structures using various materials to reduce the impact of coastal processes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are groynes?

A

timber or rock structures built at right angles to the coast. They trap sediment being moved by longshore drift.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the advantages of groynes?

A

. builds up the beach and increases tourist opportunities
. protects the land behind it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the disadvantages of groynes?

A

. beach further up the coast maybe starved of sediment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How much do groynes cost?

A

£5,000 to £10,000 each

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are sea walls?

A

stone or concrete walls at the foot of a cliff which are usually curved to reflect the waves energy back out to sea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the advantages of sea walls?

A

.very effective against erosion
. often make a promenade for people to walk along them

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the disadvantages of sea walls?

A

. very unnatural looking
. need a high level of maintenance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How much do sea walls cost?

A

£6000 per m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are rip raps?

A

large rocks placed at the base of a cliff. It breaks up the energy of the waves while allowing water to pass through.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the advantages of rip raps?

A

. cheap and easy to construct and maintain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the disadvantages of rip raps?

A

. the rocks are usually not local so look out of place
. can be dangerous if people climb on them

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How much do rip raps cost?

A

£1000 to £3000 per metre

16
Q

What are offshore breakwaters?

A

a partly submerged barrier designed to break up the waves before they reach the coast.

17
Q

What are the advantages of offshore breakwaters?

A

an effective barrier that does not obstruct the beach in any way

18
Q

What are the disadvantages of offshore breakwaters?

A

. visually unappealing
. a potential navigation hazard

19
Q

How much do offshore breakwaters cost?

A

£1000 to £3000 per metre

20
Q

What are reventments?

A

sloping wooden or concrete structures placed at the foot of a cliff and they break up the waves energy.

21
Q

What are the advantages of reventments?

A

relatively cheap to build

22
Q

What are the disadvantages of reventments?

A

. they can cause erosion further out to sea
. usually very unattractive
. expensive to maintain

23
Q

How much do reventments cost?

A

up to £4500 per metre

24
Q

What is soft engineering?

A

where the natural environment is used to help reduce coastal erosion and river flooding

25
Q

What is beach nourishment?

A

the process where sand is dredged from the seabed and placed on the beach

26
Q

What is the advantages of beach nourishment?

A

. relativly cheap and easy to maintain
. looks natural
. increase tourist potential

27
Q

What are the disadvantages of beach nourishment?

A

it needs constant maintainance because of natural processes of erosion and longshore drift

28
Q

What is the cost of beach nourishment?

A

£3000 per metre

29
Q

What is cliff regrading and drainage?

A

.reducing the steepness of the cliff to help stabilize it
. drainage removes the water to prevent landslides and slumping

30
Q

What are the advantages of cliff regrading and drainage?

A

. can be effective on clay or soft rock
.drainage is cost effective

31
Q

What are the disadvantages of cliff regrading and drainage

A

. regrading effectively causes the cliff to retreat
. drained cliffs can dry out and lead to collapse

32
Q

How much does cliff regrading and drainage cost?

A

cost is variable

33
Q

What is dune stabilisation?

A

. marram grass can be planted to stabilize dunes
. areas can be fence off to keep people off

34
Q

What are the advantages of dune stabilisation?

A

. maintains a natural environment
. provides important wildlife environments
. relatively cheap

Geography-Costal systems and landscapes (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions