Chaitén Flashcards
Social Impacts
Loss of Social Amenities
Changes to risk perception
Reduced strength of community (only 900 people left in the area)
Economic Impacts
Costs emergency rescue
Costs of repairs to infrastructure
Losses to industry (air travel with neighboring argentina)
Unemployment and loss of assets
Loss of international trade, especially to airliners
Environmental Impacts
Lahars
Cut off transport/communication links
Destroyed animal habitats
Ash fall up to 15 cm deep
Primary Effects
Tephra
Pyroclastic flows
Lava flows
Volcanic gases
Secondary Effects
Lahars
Flooding
Volcanic landslides
Composition of lava
mainly Rhyolitic
Behavior of eruption
numerous plumes, pyroclastic flows, minor earthquakes, lahars, new lava dome on North side.
how high was the ash cloud?
17km high
What type of volcano was it?
Caldera volcano- a central spine of lava was pushed out of the new dome, but will likely collapse
Demographic Impacts
1 human fatality due to stress
45% left permanently
Only 12% ready to return
Development of volcano prediction systems
Monitoring 43 high-threat volcanoes
USGS introduced real-time monitoring.
Relocation of town
Chilean Government decided to restore old town in January 2011
Aid
Government monthly disaster compensation of $1200-$2200 per month per family
90 freeze on payment of existing loans
Financial aid to small businesses
Insurance
over $12 million paid out to owners of insured buildings
