In 90 percent of avalanche fatalities, the avalanche is triggered by the weight of the victim, or someone in the victim's party. Natural avalanches occur because new or windblown snow overloads weak layers of snow, or because of rapid warming, but there's almost always obvious signs of instability by the time avalanches come down on their own.
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== == Basically, the snow builds up to the point where it can no longer support its own weight. Then it falls down. An avalanche can be triggered by an outside force such as a person traveling over its weakest point. Most avalanches occur when dense snow covers a weak layer. The bottom layer is often from colder snow with more air pockets, while the top layer is warmer and wetter. When snow blows the top layer, it can form areas where the snow hangs over a steep slope. When anything heavy breaks the snow, the weak layer gives, and the heavier top layer slides down. Avalanches also occur from the same basic week layer, strong layer, but if anything heavy moves across in the right place, the snow will slide. Example, a skier. A little bit of wind pushes a snowflake off a tree. The snowflake gets more and more snow on it. An avalanche occurs when there's an over-burden.
Avalanches occur when a large amount of snow and ice or rock falls suddenly down a mountainside. There are slab (or wet) avalanches and powder snow (or dry) avalanches. They usually happen after storms and are caused by weak layers of snow being unable to support the weight of the snow above it and the overlying snow cracks and breaks away.
An Avalanche is usually caused by large vibrations of sound through the air or under the icy snow, quick tempeture changes , speed changes in the wind or the weight of a snow sporter (ie. snowborder skiier).
As snow falls, it freezes and forms layers. An avalanche occurs if these layers become separated and move apart. This can be caused by climate change, heavy snowfall or loud noises. Avalanches may also be caused by people climbing, skiing or Snowboarding on unstable snow. Safety officers in ski resorts analyse the snow's profile. If they discover that the conditions are favourable for an avalanche, they carry out controlled explosions to loosen the ice and snow.
discovery channel
because most of the snow falls in the winter which causes the skiers to shout and yell and scream snow comes dripping of the mountain hill or a slope causing an avalanche
Unstable snow, sudden shake or movement, chain reaction of snow sliding down hills (an avalanche)
blizzards
whiteout
Sure
A hurricane, and a heavy snowfall are two examples.
blizzards
Sneachta trom.
certainly they all get a heavy snowfall but kyushuu gets much less than the rest
blizzards
Completely false. Okinawa NEVER receives snowfall.
a storm that brings heavy snowfall with blizzard force winds
turd
Available moisture, and temperature in the air.
whiteout
Sure
A hurricane, and a heavy snowfall are two examples.
Blizzard
storm that brings heavy snowfall and has blizzard force winds