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| a wastage of glacial ice by both melting and evaporation |
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| erosion of bedrock of a stream channel by impact of particles carried in a stream and by rolling of larger rock fragments over the stream bed; abrasion is also an activity of glacial ice, waves and wind |
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a condition that develops when the rising air remains warmer and less dense than the surrounding air
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| a condition the develops when the temperature of the surrounding air is warmer than the air parcel |
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| actual evapotranspiration (water use) |
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Definition
| actual rate of evapotranspiration at a given time and place |
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change of temperature within a gas because of compression or expansion without gain or loss of heat from the outside
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| the process collectively referring to the geomorphic work of wind in terrestrial environments. It includes erosion, transportation, and deposition of Earth materials. |
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| soil order consisting of soils of humid and sub-humid climates, with high base status and an argillic horizon |
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| long, narrow mountain glacier on a steep downgrade, occupying the floor of a troughlike valley. |
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| a soil order that includes soils on volcanic ash; often enriched by organic matter, yielding a dark soil colour. |
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| soil order consisting of soils of dry climates, with or without argillic horizons, and with accumulation of carbonated or soluble salts |
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| explanation for glaciations and interglaciations making use of cyclic variations in the form of solar energy received at the Earth's surface. |
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| circular or closed-loop coral reef enclosing an open lagoon with no island inside. |
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| sand dune of crescentic bade outline with sharp crest and steep lee slip face, with crescent points (horns) pointing downwind. |
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| certain positively-charged ions in the soil that are also plant nutrients; the most important are calcium, magnesium, potassium and sodium. |
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thick, wedge-shaped accumulation of sand, gravel or cobbles in the zone of breaking waves
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| the formation of precipitation in the cold clouds of the mid and upper latitudes by ice crystal growth |
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largest recognizable subdivision of terrestrial ecosystems, including the total assemblage of plant and animal life interacting within the life layer
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| shallow depression produced by continued deflation. |
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| cold climate of the subarctic zone in the northern hemisphere with long, extremely severe winters and several consecutive months of zero potential evapotranspiration (water need) |
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| a class of forest soils in the Canadian Soil classification system with brownish B horizon |
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| a class of grassland soils in the Canadian soil classification system with a thick A horizon rich in organic matter. |
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bowl-shaped depression carved in rock by glacial processes and holding the firn of the upper end of an alpine glacier
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