volcano/lahar
- Created by: jessica ashworth
- Created on: 19-02-20 12:39
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- Nevado del ruiz, eruption and lahar
- spatial and temporal
- Columbia, nazca sub-ducted under south american
- 13th nov, 1985
- ash 30km in to air
- Impacts
- primary
- mass of eruption 35 million metric tonnes
- pyroclastic flow melted glacier forming lahars
- 30m deep 50m wide and travel at 12m per second
- 3400 hectares agri land lost
- infrastructure, roads and water destroyed
- 50 schools, 2 hospitals, 58 industrial plats destroyed
- secondary
- 150,000 animals killed by lahar
- land more fertile from ash
- cost columbian econ 7.7 billion 20% of their gdp
- 23,000 killed by lahar 5000 injured
- 8000 homeless
- amero tradgedy lahar killed 3/4 residents
- primary
- managment
- wasn't managed
- were evacuated previously but eruption didn't occur so moved back
- wasn't managed
- perception
- low as eruption hadn't occurred
- unaware of lahar
- unaware of continuing activiy
- low as eruption hadn't occurred
- response
- immediate
- no action 3 days after event from gov so no aid received
- red cross, civil defence personelle rescue and medical
- colombian military, helicopters to rescue victims and distribute supplies
- health workers gave 80,000 vaccines tetnis and typhoid
- long term
- colombia established plan of warning and evacuation
- public education campaign 1986 make aware of dangers of volcanos
- red cross flyers
- hazard distribution maps
- evacuation routes painted on buildings
- immediate
- spatial and temporal
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