During the avalanches, particles of different sizes often segregate out into inversely graded layers with the large grains on top of the fines.
Saltation The genesis of powder snow avalanches is also thought to sometimes arise from a saltation layer on the surface of a dense avalanche.
Successive temples have been shattered by avalanches, and the existing building is modern.
The Alps and Pyrenees are in large part deforested, but reafforestation with a view to minimizing the effects of avalanches and sudden floods is continually in progress.
The point of maximum convexity is a frequent site of tension fracture, with release of slab avalanches.
The road tunneled through a snow shed, a reminder of the frequent and hazardous avalanches that plagued the area.
The town was formerly much exposed to avalanches and floods, which are now less frequent owing to the construction of embankments and replanting of the hillsides.
They protect the valleys from destructive avalanches, and, retaining the superficial soil by their roots, they mitigate the destructive effects of heavy rains.
Wet snow avalanches During periods of warm weather, water from melting surface snow can permeate through the snowpack to a weak layer.