Volcanic Eruptions: Case Study (LEDC) Flashcards
What was the population, GDP, communications and main industry?
Population: 11,000
GDP: $5800
Communications: 3000 telephones
Main industries: Rum & Tourism
Where is the tectonic location of Montseratt?
Boundary between Caribbean plate and North American plate
What preparation was in place for the Montseratt eruption?
None
What is the case study for a volcano eruption in an LEDC?
Montserrat, 1995
What were 3 primary impact of the Montseratt eruption?
1) 23 deaths
2) Forest fires
3) Schools and hospitals destroyed
What were 3 secondary impacts of Montseratt eruption?
1) 60% of population left after 6 years
2) Tourism is non existent
3) Rum farmlands destroyed
What were the immediate responses to the Montseratt eruption?
1) 50% of population moved North
2) exclusion zones shut off for 60% of island
What were 3 long term responses to the Montseratt eruption
Observatory created
New £11m airport
Capital moved north
What is the second case study for for a volcanic eruption in LEDC?
Nevada Del Ruiz, Colombia (1985)
What was the population, Dependancy ratio, GDP and main industries of Colombia?
1) Population = 3 million
2) Dependancy ratio=73%
3) GDP per head = $1200
4) Main industries= Construction and manufacturing
What type of volcano and what is he tectonic location of Nevada Del Ruiz?
- Stratavolcano
- Nazca plate subduction for beneath South American plate
What was the nearby town to Nevada Del Ruiz volcano that suffered greatest?
Armero
What was unique about the Nevada Del Ruiz eruption? And how did it lead to worse impacts?
It erupted at 7pm then again at 9pm. This lead to worse impacts because they told everyone it was fine
What were the indications that an eruption was imminent?
There were tremors leading upto the eruption
What were 5 primary impacts of the Nevada Del Ruiz eruption?
24K deaths Infrastructure damaged 2 hospitals lost $7.7 Billion cost 10K homeless
What were 4 long term impacts?
- 15,000 livestock killed >Economic
- 50% reduction in economic activity after 3 months >Economic
- water contamination for fishing industry >Economic
- Transmission lines damaged
What were 3 immediate response to the Nevada del Ruiz eruption?
- Helicopter search & rescue
- Cleaning people covered in lahar mud
- Red Cross and Civil Defense helped
What were 3 long term response to Nevada Del Ruiz ?
Tempory bridges
30 foreign countries gave aid
Mass body burial
5 reasons as to why the Nevada Del Ruiz eruption so bad
Night eruption Two eruptions Lahars: displacing people, Body ID, Debris Hospitals overrun and destroyed Helicopters shortage
