Case study of a volcanic eruption Flashcards

0
Q

Causes

A

Area lies on the Pacific ‘Ring of Fire’ here there is a lot of volcanic activity.

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1
Q

Eruption, size, number of deaths/homeless

A

Mount Pinatubo, Phillapines, 1991
20 square km of magma ejected
700 deaths
1.2 million homeless

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3
Q

Primary effects

A
  • Up to 50cm of ash fell on nearby farmland/villages/towns
  • weight of ash cause 200,000 homes/factories/schools to collapse
  • 1991 rice crop ruined
  • roads/bridges severely damaged
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4
Q

Immediate responses

A
  • shanty town type refugee camps set up
  • Manila airport closed
  • Action Aid/ Oxfam sent disaster relief
  • food, drinking water, tents and blankets sent in from other parts of Phillapines
  • roads cleared of ash/mud for emergency services
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5
Q

Secondary effects

A

Negative:

  • water supplies contaminated
  • planting crops was at first impossible
  • disease such as diahorrea/chicken pox/malaria spread rapidly in camps
  • food shortages

Positive:
-a few years after the eruption land became very fertile due to ash deposits
`

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6
Q

Long-term responses

A
  • President Ramos created the mount Pinatubo Commission and raised 10 billion Filipino pesos in aid
  • new houses built on stilts to protect from future lahars
  • local authorities have tried to encourage investment in the area
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