Slab Avalanche 3
Slab Avalanche 3 : The simultaneous rupture of a coherent mass of snow over an extended area. A distinct fracture line is left at the upslope limit of the avalanche, and a clearly defined sliding surface is often revealed. Slab avalanches may be sub-classified as either soft slab (SS), if during motion the avalanche breaks into a formless mass, or hard slab (HS), if hard angular blocks of snow are left in the final avalanche debris. Wet slabs are slab avalanches that have free water present at the fracture line and generally result from rain or appreciable surface snow melt
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