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EBOULEMENT CATASTROPHIQUE [1 record]

Record 1 2010-04-06

English

Subject field(s)
  • Soil Mechanics (Engineering)
  • Physical Geography (General)
DEF

A rockfall that has turned into a flow, occurring only when large rockfalls and rockslides, involving millions of metric tons, attain extremely rapid speeds.

OBS

Rockfall avalanche ... most common in a rugged mountainous region, as that which occurred in 1903 at Frank, Alberta.

French

Domaine(s)
  • Mécanique des sols
  • Géographie physique (Généralités)
CONT

[Les] éboulements catastrophiques [sont] réunis par trois caractères communs essentiels : leur volume important, supérieur à la dizaine de millions de mètres cubes, des extensions peu ordinaires, de l'ordre de plusieurs kilomètres, [...] des vitesses importantes, de plusieurs centaines de km/h.

OBS

éboulement : Chute spontanée d'un flanc abrupt de roche massive ou de matériel tendre et compact, due à la gravité. Il en résulte un chaos de blocs. Phénomène peu fréquent qui présente souvent un caractère catastrophique.

Spanish

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