Photograph courtesy of Matt Jackson, Norwich, England at www.avalanche.org

 

 

Avalanches


Photograph courtesy of Jan Pala, Czech Republic
at www.avalanche.org

Avalanche-a large mass of snow, ice, and other debris, that has detached from a mountain slope and suddenly starts to slide or fall downward.

Avalanches kill more people in the U.S. than Earthquakes every year. A rise in temperature or an earthquake may loosen the snow causing it to give way, or cause a new fall of heavy snow. The layers of the snow are a way to predict if an avalanche could fall soon or if an avalanche won’t be able to stir up. The snow on the surface begins to slide from a single point, collecting more snow as it moves, and widening out into a triangular shape, creating what is commonly called a sluff. Once the avalanches start, they are capable of snapping the tops off trees and destroying everything in their path. When the snow falls to the ground and it is at the foot of the hill, the snow hardens giving someone who is trapped under the great amounts of snow a slim chance of survival.

 

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Avalanche Safety Tips
Additional Information about Avalanches

Avalanche Safety
The Disaster Twins
Winterstorm Disaster Math
The Snowman Game

http://www.avalanche.org/
http://www.pbs.org/wgbh/nova/avalanche/