Nev. Del Ruiz - Lahars Flashcards
1
Q
Hazards
A
- tephra ejected 30km+
- 700k metric tonnes of sulphur dioxide
- 30m high, 50m wide
- speeds around 60kmph
- reached river valleys and x4 in size
2
Q
Impacts
A
- lower income as econ activity disrupted
- 70% of Armero’s residents killed by mudflows
- lahars killed 23k+, 50 schools destroyed
- 2 hospitals, 5000+ homes destroyed, 7500+ homeless
- lahars destroyed local veg, 30% of crops, 60% of livestock
3
Q
Prediction/Prep
A
- local gov warned of big eruption, didnt tell public.
- only knew abt eruption when ash cloud was seen
- evac ordered, never carried out (elec problems)
- storm = no outside knowledge of events at Ruiz