Case Study- Lake Nyos (ledc)

HideShow resource information
  • Created by: EMBROWN23
  • Created on: 13-12-15 19:39
When did the event occur?
21st August 1986.
1 of 22
Where is Lake Nyos Located?
Northwest Cameroon.
2 of 22
How long along did this split occur?
110 million years ago.
3 of 22
What is the name of the rift?
Mbere Rift Valley.
4 of 22
Which two continents spilt to form the rift valley?
South America and Africa.
5 of 22
Why has magma reached the surface beneath the lake?
Because the crust is streching apart.
6 of 22
What gas is leaked into the lake?
Carbon Dioxide.
7 of 22
What affect does this have on the water?
Creates a weak carbonic acid.
8 of 22
What caused the lake water to be disrupted?
An earthquake triggered a land slide.
9 of 22
What happend to the gas?
It escaped.
10 of 22
How many people suffocated from a large cloud of Carbon dioxide?
1,700.
11 of 22
How many livestock were killed?
3,500.
12 of 22
How much carbon dioxide was released in a cloud and how fast did it rise?
100,000-300,000 tons and at nearly 100 kilometers per hour.
13 of 22
Name a village that was one of the worst affected?
Chia, Nyos and Subum.
14 of 22
How much denser is carbon dioxide than air and what effect did this have?
1.5 times and the carbon dioxide became stuck on the ground.
15 of 22
How many people had to leave the area?
4000 people.
16 of 22
What long term effect did people suffer from?
Respiratory problems.
17 of 22
How much did non-governmental organisations sent?
$ 352,389.
18 of 22
Give examples of the different type of aid provided?
1) Clean drinking water, 2) sanitation, 3) food, 4) medical and 5) shelter.
19 of 22
What did the Cameroon goverment do to help people affected?
They set up temporary camps to relocate diaster victims to risk-free zones.
20 of 22
How are they now manageing the lake to prevent it from happening again.
They are degassing the lake to prevent larges levels of carbon dioxide from being released and reinforcing the lake walls.
21 of 22
How did they assist survivors in re-establishing normal lifestyles?
They built permanent resettlement sites.
22 of 22

Other cards in this set

Card 2

Front

Where is Lake Nyos Located?

Back

Northwest Cameroon.

Card 3

Front

How long along did this split occur?

Back

Preview of the front of card 3

Card 4

Front

What is the name of the rift?

Back

Preview of the front of card 4

Card 5

Front

Which two continents spilt to form the rift valley?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Plate tectonics resources »