Restless Earth: Volano Case Study Flashcards
0
Q
When did the hills volcano erupt?
A
1997
1
Q
What is the volcano case study?
A
The soufrière hills in Montserrat
2
Q
How much rock and has was released when it erupted?
A
4-5 million m cubed
3
Q
How many people were killed in the sufrière hills eruption?
A
19
4
Q
What were the three causes of the eruption?
A
On a destructive margin- Atlantic plate was forced under the Caribbean plate
Magma rose through weak point forming pools of lava
Rock collapses opening a vent and caused the eruption
5
Q
What were the 5 immediate responses of the eruption?
A
- people evacuated
- shelters build to house evacuees
- temporary infrastructure (roads)
- emergency aid 17 million from the U.K.
- local emergency services searched for survivors
6
Q
What were the three long term responses?
A
- high risk map was created and an exclusion zone is in place. Island is off limits while its active
- uk provided 41 million to develop news docks and houses
- mountserrat volcano observatory has been set up to try and predict future eruptions
7
Q
What are 5 secondary impacts of the sufrière hills eruption?
A
- fires destroyed services and buildings
- tourists stayed away- less business
- population declined 8000 inhabitants left
- ash has improved soil fertility
- tourism now increasing as people come to see the volcano
8
Q
What are 5 primary impacts of the sufrière hills eruption?
A
- large areas (Plymouth) buried under 12m of mud and ash
- over 20 villages and 2/3 homes were destroyed due to pyroclastic flows
- schools, hospitals and the airport were destroyed
- farmland destroyed
- 19 people died, 7 injured
9
Q
What is pyroclastic flow?
A
Fast moving clouds of super heated gas and ash
