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11 Cards in this Set
- Front
- Back
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Two contrasting eruptions? |
Nevado Del Ruiz- Colombia (20 March 2010) Eyjafjallajokull- Iceland (13 November 1985) |
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Locations? |
NDR- under glacier E15- under ice cap |
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Cause of NDR? |
Destructive plate boundary (O:C), Nazca subducted beneath SA plate. Andesitic magma with high SC |
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What type of volcano was NDR? |
Strato- composite- explosive |
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Cause of E15? |
Constructive PM, NA plate and Eurasian plate separating. Basaltic Magma with Low SC |
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Impacts of NDR? |
23,000 deaths 4th deadliest in history $1billion cost Town of Armero buried by Lahar |
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Impacts of E15 |
0 deaths Ash covers European airspace closure due to ash clouds Local flooding Costs to airline $2.5bn Global impact on trade |
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Long term impacts of NDR? |
Area of disaster not being rebuilt (Holy ground) Lahar warning system put in place elsewhere Basic lahar channels built |
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Long term impacts of E15? |
Global warming could cause more volcanoes to become more active on Iceland |
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Human response to NDR? |
Happened at same time as Mexico City quake Hazard maps handed out Government ignored warnings (possibly due to insufficient funds due to guerilla war) Red cross ordered evacuation 2 hours b4 but ash stopped so cancelled it |
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Human response to E15? |
Good hazard management as eruptions frequent in Iceland Air traffic diverted and cancelled Evacuation of local towns |
