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avalanche

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avalanche wind

Overview page. Subjects: Meteorology and Climatology.

The rush of air formed in front of an avalanche. Its most destructive form, the avalanche blast, occurs when an avalanche stops abruptly.

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landslide

Overview page. Subjects: Earth Sciences and Geography.

A form of mass movement where the displaced material retains its form as it moves. Cruden and Varnes (USGS Fact Sheet 2004–3072) divide landslides into slides, falls, flows, topples, and...

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mass movement

Overview page. Subjects: Earth Sciences and Geography — Environmental Science.

The process by which unconsolidated material moves down hillslopes in the form of a flow, slide, fall, or creep, as a result of gravity. Also known as mass wasting. See also avalanche,...

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natural Hazards

Overview page. Subjects: Environmental Science.

A process or event in the physical environment that is not caused by humans, is usually not entirely predictable, but can injure or kill people and damage property. Examples include natural...

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snow

Overview page. Subjects: Meteorology and Climatology.

Frozen water vapour in the atmosphere that falls in light white flakes (snowflakes) and settles on the ground as a white layer. A form of precipitation.

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Snow Cover

Overview page. Subjects: Environmental Science.

Snow cover is the most spatially extensive and seasonally variable component of the global cryosphere. On average, snow covers 46 million square kilometers, or half, of the Northern...

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Weather Hazards

Overview page. Subjects: Meteorology and Climatology.

A predominant way of looking at the Earth's atmosphere has been to see it as a source of both resources and hazards. Many attributes of the atmospheric and climate system ...

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whumpf

Overview page. Subjects: Meteorology and Climatology.

[onomatopoeic]

A colloquial term for the sudden collapse of weak layers within a snow pack on level terrain. Failure of the lower, fragile layers allows the overlying surface to...

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