France, 9th  February 1999
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France, 9th February 1999

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France, 9th  February 1999 France, 9th February 1999 Presentation Transcript

  • Avalanche ST
  • What is an avalanche???
    • An avalanche is a rapid flow of snow down a slope
    • Naturally triggered or human activity
    • Occurs in mountains
    • Avalanche mix of water and snow.
    • Powerful avalanches - ice, rocks, trees etc.
  • When did the avalanche happen???
    • 9th February 1999
    View slide
  • Where did the avalanche happen???
    • The Alps, France
    • Off the Mount de Péclerey into Montroc village
    View slide
  • The committees involvement
    • Growing population – so risks were overlooked
    • New chalets were built on a known avalanche path.
    • Despite warnings, the committee decided not to evacuate
  • Why???
    • Weather triggered
    • 3 days of snow + strong winds
  • What Happened???
    • 30 hector broke off but grew as it went down the mountain
    • In the end 300,000 cubic metres of snow slid on a 30 degree slope
    • achieving a speed of 100 km/h (60 mph).
  • Effects of the avalanche???
    • Part of the forest, buildings, pylons were crushed.
    • It killed 14 people
    • 14 buildings destroyed + 6 badly damaged.
  • The Mayor
    • The mayor of Chamonix was convicted of second-degree murder for not evacuating the area, but received a suspended sentence.
  • Memorial Cross