France, 9th February 1999
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Transcript of France, 9th February 1999
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AvalancheAvalanche
STST
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What is an avalanche???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.
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When did the avalanche When did the avalanche happen???happen???
9th February 1999
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Where did the avalanche Where did the avalanche happen??? happen???
The Alps, France
Off the Mount de Péclerey into Montroc village
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The committees involvementThe 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
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Why???Why???
Weather triggered
3 days of snow + strong winds
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What Happened???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).
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Effects of the avalanche??? Effects of the avalanche???
Part of the forest, buildings, pylons were crushed.
It killed 14 people
14 buildings destroyed + 6 badly damaged.
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The MayorThe Mayor
The mayor of Chamonix was convicted of second-degree murder for not evacuating the area, but received a suspended sentence.
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Memorial CrossMemorial Cross