makes a slab?
When stronger snow overlies weaker
snow, we call it a slab. Or as Karl Birkeland puts it,
"A slab is when you have something sitting on top
of nothing." A slab can occur anywhere in the snowpack
but avalanche professionals usually think of a slab
as the layer that slides off the slope to create the
Remember that a slab doesn't have to be so hard that
you can hardly kick you boot into it. It just has to
be relatively stronger than the snow underneath. Light,
dry powder snow can behave as a slab as long as it has
an even weaker layer underneath.
Most commonly, slabs tend to be harder, more cohesive
snow such as wind slabs, denser new snow or settled