Please enable JavaScript.
Coggle requires JavaScript to display documents.
Mount Pinatubo 1991- Phillipines - Coggle Diagram
Mount Pinatubo 1991- Phillipines
Why is the area a hazard risk?
Lays on a Destructive plate boundary, oceanic subducted beneath eurasian plate
Oceanic plate subducted and turned into magma which rose
Frequent ejection of lava over several million years
Social Impacts
Immediate Effects
+Several advance warning signs, allowed evacuation of thousands, 15,000 from American air base
-Weight of ash causes buildings to collapse, 200,000 homes and many factories
-Power supplies were cut off for 3 weeks, water supplies were contaminated
Long Term Effects
-Majority of evacuees were forced t seek food and shelter in shanty towns
-Disease e.g. malaria, diarrhoea spread rapidly - hundreds needed treatment
-Typhoons bought heavy rainfall = leading to floods and lahars
-700 deaths, 600 died from disease, 70 from suffocation
Economic Impacts
Immediate Effects
Ash destroyed all crops and farmland
-Relief operations were hindered due to roads and bridges being destroyed
Long Term Effects
-Thick ash fall ruined 1991 harvest and planting was impossible in 1992
-Several thousand farmers and families had to take refuge in larger cities
Environmental Impacts
Immediate Effects
-12th June- A stream of cloud and ash was sent 30km into sky
-Eruptions were accompanied by earthquakes and torrential rain. Once combined with ash = thick mud falling from sky
Long Term Effects
-1 million farm animals died due to starvation
-Ash caused changes to earth climate = lowering worlds temp + ozone layer depletion
How did people respond?
-Some members of the native tribe didn't return
HOWEVER, many did as the preferred rural to urban areas
-Many believed shanty towns were safer than an area where a hazard was likely to reoccur