#Avalanches
#Avalanches in #Dagestan, #Russia. Cars and Homes destroyed | பனிச்சரிவு #March_2021.
An avalanche (also called a snowslide) பனிச்சரிவு is a rapid flow of snow down a slope, such as a hill or mountain.
Avalanches can be set off spontaneously, by such factors as increased precipitation or snowpack weakening, or by external means such as humans, animals, and earthquakes.
Primarily composed of flowing snow and air, large avalanches have the capability to capture and move ice, rocks, and trees.
They occur in two general forms, or some combination:
Slab avalanches made of tightly packed snow, triggered by a collapse of an underlying weak snow layer, and
Loose snow avalanches made of looser snow. After being set off, avalanches usually accelerate rapidly and grow in mass and volume as they capture more snow.
If an avalanche moves fast enough, some of the snow may mix with the air, forming a powder snow avalanche.
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