Avalanches -- triggered from the valley
Tuesday, December 2, 2008 - 14:28
in Earth & Climate
Everybody knows that skiers swishing down steep slopes can cause extensive slab avalanches. But there is a less well known phenomenon: A person skiing a gentle slope in the valley triggers a slab avalanche on a steeper slope, sometimes several hundred meters further uphill. This scenario doesn't seem to make sense - yet it claims human lives year after year.