Earth Donovan 2019 - Puyehue-Cordon Caulle
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Imbalance of resources between nations
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31 Terms
What eruption highlighted unequal volcanic monitoring resources?
Puyehue-Cordón Caulle, 2011.
Where did the Puyehue-Cordón Caulle eruption occur?
Chile.
When did the eruption occur?
June 2011.
What was the eruption magnitude?
VEI 5.
Which country was implementing new volcano monitoring?
Chile.
How long was Chile’s monitoring programme planned for?
Five years.
Which country depended on Chilean volcanic information?
Argentina.
Which VAAC monitored ash dispersion?
Buenos Aires VAAC.
Why was communication between Chile and Argentina difficult?
Different governance systems.
What type of governance did Chile use?
Centralised governance.
What type of governance did Argentina use?
Federal governance.
What problem did Chile face contacting Argentina?
Did not know which municipalities to contact.
What direction did the ash mainly travel?
Towards Argentina.
What type of tephra was produced?
Silica-rich tephra.
What hazards occurred near the vent?
Tephra fall and obsidian lava flows.
Who was threatened near the volcano?
Tourists and local communities.
What happened to infrastructure during the eruption?
Ash loading caused collapse.
What health issue did ashfall cause?
Respiratory difficulties.
What happened to Bariloche airport?
It closed.
What happened to flights in Buenos Aires?
They were grounded.
Which town received severe ashfall?
Villa La Angostura.
How much ash fell there initially?
17 cm in the first hours.
How much ash eventually accumulated?
Over 1 metre.
Why was ashfall severe in Villa La Angostura?
Prevailing winds carried ash there.
What warning problem existed in Argentina?
No clear warning/decision-making system.
How did tourism affect local decisions?
Mayors downplayed risks to protect ski tourism.
How many volcanic alert levels did Argentina use?
4 levels.
How many volcanic alert levels did Chile use?
3 levels.
Why did alert systems cause confusion?
The countries used different systems.
Which country had stronger scientific resources?
Chile.
What major issue existed within Argentina?
Poor boundary spanning and coordination.