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AVALANCHE CLASS [1 record]

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Alphabetical list of terms

Record 1 2006-10-26

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
CONT

The size (mass) of snow avalanches depends on the amount of snow that releases initially in the starting zone, plus the amount entrained (picked up) or deposited during downslope motion. ... The mass of snow avalanches varies from small amounts occurring as a result of sluffs to deep slabs with long continuous fracture lines up to about one million tonnes (order of magnitude).

CONT

An avalanche's size and destructive potential depend on several factors including: the amount of snow available, the terrain and its vegetative cover, the steepness of the slope, and the instability of the snowpack. Weather factors also play key roles in the initiation and ultimate severity of an avalanche.

CONT

What was the avalanche size of that release? [Example approved by the Avalanche Bulletin Terminology Standardization Committee.]

OBS

The term avalanche class is replaced by the term avalanche size; avoid its use even though it is still encountered occasionally.

OBS

avalanche size; size: terms officially approved by the Avalanche Bulletin Terminology Standardization Committee.

Key term(s)
  • snow avalanche size

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
DEF

Étendue de l'avalanche, classée selon la longueur de l'écoulement, le volume et les dommages potentiels.

CONT

Quelle est la taille de cette avalanche ? [Exemple entériné par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.]

OBS

La taille de l'avalanche concerne surtout le volume de neige (ou d'aérosol) mis en jeu par l'avalanche. L'intensité d'une avalanche est un terme surtout utilisé par les ingénieurs et chercheurs en protection paravalanche. Une avalanche intense est une avalanche dont les caractéristiques dynamiques sont élevées : vitesse, pression, pouvoir destructeur.

OBS

taille de l'avalanche : terme uniformisé par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.

Spanish

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