Avalanches mOrgan

Avalanches occur when a layer of snow collapses and slides downhill. The five natural causes for Avalanches are, wind, rain, warming temperatures, snow and earthquakes. There are also many things humans can do to cause Avalanches such as, skiing, snowmobiling, and hiking. Vibrations from machinery or construction sites can also cause an Avalanche. The average Avalanche can travel up to 90 km/h. Typically, after one hour, only one in three victims buried in an avalanche is found alive. The most common causes of death are suffocation, wounds, and hypothermia.

The 11 countries Avalanches occur in the most are Iceland, Nepal (Mount Everest), France (French Alps), Austria (Alps), Slovakia (Tatra), Afghanistan (Hindu Kush), Canada (Rocky Mountains), Italy (Swiss Alps), United States (Appalachians) , Argentina (Andes), and Peru (Andes).

There are two main types of avalanches, a loose snow avalanche and a slab avalanche. Loose snow avalanches (aka slough or sluff) are a large amount of loose snow that gathers speed as it descends down the mountain. These avalanches are mostly caused by strong winds. Slab avalanches are basically a bonded sheet of snow that slides down the side of a mountain at a fast pace. Slab avalanches are mostly caused by wind and rain.

https://www.getprepared.gc.ca/cnt/hzd/vlchs-en.aspx https://www.meted.ucar.edu/afwa/avalanche/navmenu.php?tab=1&page=2.3.0

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