Armstrong, Richard L. Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado.
Last reviewed:October 2019
- Release mechanism
- Defense methods
- Related Primary Literature
- Additional Reading
In general, a large mass of snow, ice, rock, earth, or mud in rapid motion down a slope or over a precipice. In the English language, the term avalanche is reserved almost exclusively for snow avalanche. Minimal requirements for the occurrence of an avalanche are snow and an inclined surface, usually a mountainside. Most avalanches occur on slopes between 30 and 45°.
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