debris avalanche

   The mass movement process, associated sediments (debris avalanche deposit), or resultant landform characterized by a very rapid to extremely rapid type of flow dominated by the sudden downslope movement of incoherent, unsorted mixtures of soil and weathered bedrock which, although comparatively dry, behave much as a viscous fluid when moving.
   SW & GG

Glossary of landform and geologic terms. 2013.

Look at other dictionaries:

  • debris avalanche — ALASKA VOLCANO OBSERVATORY GLOSSARY Rapidly moving, dry flows of disaggregated rock debris, sand, and silt. Volcanic debris avalanches commonly form by some type of structural collapse of the volcano, usually the steep front of the cooled lava… …   Glossary of volcanic terms

  • debris-avalanche — “+| noun : a mass of rock fragments and soil that has moved rapidly down a steep mountain slope or hillside and because of its high water content has behaved like an avalanche of snow compare debris slide …   Useful english dictionary

  • Avalanche — This article refers to the natural event. For other uses, see Avalanche (disambiguation) An avalanche is an abrupt and rapid flow of snow, often mixed with air and water, down a mountainside. Avalanches are among the biggest dangers in the… …   Wikipedia

  • avalanche — ALASKA VOLCANO OBSERVATORY GLOSSARY A large mass of material or mixtures of material falling or sliding rapidly under the force of gravity. Avalanches often are classified by their content, such as snow, ice, soil, or rock avalanches. A mixture… …   Glossary of volcanic terms

  • debris-slide — ˌslīd noun : a mass of predominantly unconsolidated and incoherent soil and rock fragments that has slid or rolled rapidly down a steep slope when comparatively dry to form an irregular hummocky deposit compare debris avalanche …   Useful english dictionary

  • avalanche — [ avalɑ̃ʃ ] n. f. • 1611; lavanche XVIe; mot savoyard lavantse; bas lat. labina « glissement de terrain », de labi (cf. labile); altér. d apr. 1. aval 1 ♦ Masse de neige qui se détache d une montagne, qui dévale en entraînant des pierres, des… …   Encyclopédie Universelle

  • Avalanche dam — Avalanche dams (anti avalanche dams, avalanche protection dams) are a type of avalanche control structures used for protection of inhabited areas, roads, electric lens, etc., from avalanches. The two major types are deflection and catchment dams …   Wikipedia

  • Debris flow — Scars formed by debris flow in great Los Angeles during the winter of 1968 1969. The photograph was taken within several months of the debris flows occurring. A debris flow is a fast moving, liquefied landslide of unconsolidated, saturated debris …   Wikipedia

  • avalanche — /av euh lanch , lahnch /, n., v., avalanched, avalanching. n. 1. a large mass of snow, ice, etc., detached from a mountain slope and sliding or falling suddenly downward. 2. anything like an avalanche in suddenness and overwhelming quantity: an… …   Universalium

  • débris — nm. débri (Albanais 001, Saxel 002). E. : Amas, Dépôt, Grain, Poussière, Repas, Tas. A1) débris, morceau : bokon nm. (001, Villards Thônes 028) ; beurka nf. (Cordon) A2) des débris (de verre...) : du débri de vêro (002). A3) petit débris (de pain …   Dictionnaire Français-Savoyard

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