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
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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
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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
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