avalanche

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Related to Rock avalanche: Debris avalanche
Nuclear medicine Avalanche ionization
Wilderness medicine A natural disaster in which massive unsorted mixtures of snow/ice/rock/mud cascade down a steep incline. Powder snow avalanches can exceed speeds of 300 km/h, and masses of 10,000,000 tonnes
Statistics Europe, 150 deaths/year; USA/Canada, 15/year; most are recreational—e.g., snowmobilers, mountaineers, back-country skiers
Avalanche risks Decreased snow stability; slope angles > 35º
Emergency action Do not wait; even in well-equipped ski areas, helicopters take 45 minute to arrive
Survival 15 minutes—85%; 30 minutes—40%; 1 hour—20%; 2 hours—0%
Cause of death Crush injury, hypothermia, suffocation

avalanche

Geomedicine A natural disaster in which a massive block of snow cascades down a steep incline Statistics In North America, ± 15 die thereof/yr; in Europe, 150/yr; most are recreational deaths–eg, snowmobilers, mountaineers, backcountry skiers Avalanche risks ↓ Snow stability; slope angles > 35º COD Crush injury, asphyxia. See Geological disaster.
References in periodicals archive ?
the subject building are remedial measures that represent a combination of active and passive remediation elements used to ensure rock walls and slopes against the negative effects of rock avalanches.
The proposed universal model from a materials scientist at Queen Mary University of London could have implications in better understanding strategies for mitigating natural hazards related to snow and rock avalanches and safeguarding people on mountain villages, roads and ski resorts.
Rock avalanches forming part of the process of sedimentation represent an example of such disasters.