GEOG 040 Lecture Notes - Lecture 12: Negative Mass, Ablation Zone, Accumulation Zone
13 Dec 2018
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Document Summary
The cryosphere encompasses the frozen locations across earth"s surface. It reflects incoming solar radiation from the atmosphere: glaciers sculpt the surface of earth (the lithosphere) Glaciers are slow-moving, large masses of ice that rest on land or extend over the ocean: thermal glaciers. Polar glaciers are not close enough to their melting point to produce meltwater (1) these are typically in high latitudes. Temperate glaciers do produce meltwater and are typically in the midlatitudes: continental glaciers cover the entirety of a continent polar, alpine glaciers from in mountain regions in the valleys between peaks polar or. Ice fields are multiple large, scattered glaciers in contact polar. Ice shelfs are thick, suspended platforms of ice extending over water polar temperate. Eventually the snow becomes a firn, made of granular snow: after 4-5 years the bottom layers will turn to ice in a process called recrystallization.
