An avalanche is a rapidly sliding or falling mass of snow - sometimes ice - that detaches from a steep, unforested slope and descends to the valley. The phenomenon occurs in particular in association with heavy snowfalls, a thaw, or severe drifting, but it can also be triggered by human activity. Modern research into avalanches distinguishes two fundamental types: wet avalanches and dry (powder) avalanche…
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Encyclopedia of Early Modern History Online, Executive editor of the English edition: Graeme Dunphy.
Consulted online on 23 April 2017 <http://dx.doi.org/10.1163/2352-0272_emho_COM_023179>