The process of freezing water in cloud formation. In thunderstorms, glaciation usually indicates strong updrafts and potential for hail. Glaciation is also believed to be required for lightning formation.
Alteration of any part of the earth’s surface by passage of a glacier, chiefly by glacial erosion or deposition.
The covering of a large area of land by ice; an ice age.
The process of forming glaciers.
The formation, movement, and recession of glaciers or ice sheet; geologic processes of glacial activity.
The impact of glaciers upon the landscape.
A collective term for the geologic processes of glacial activity, including erosion and deposition, and the resulting effects of such action on the Earth's surface.
the moving, grinding action of glaciers.
A long period of time (10,000+ years) characterized by climatic conditions associated with maximum glacial extent. Compare to " interglaciation" and " stade". Also used to refer to covering of an area by ice: see " glacierize".
Having been covered with a glacier or subject to glacial epochs.
The formation, movement, and recession of glaciers or ice sheets.
the condition of being covered with glaciers or masses of ice; the result of glacial action; "Agassiz recognized marks of glaciation all over northern Europe"
the process of covering the earth with glaciers or masses of ice
the phenomenon during which a mass of ice, fed by snow on a mountain, slowly creeps downhill until it melts or breaks up into icebergs
To subject to glacial action in which a large body of ice moves slowly down a slope or valley, or spreads outward on a land surface.
The formation, advance and retreat of glaciers and the results of these activities — associated with periods of prolonged cold although not always glacial conditions, and periods of lowered sea levels.
A period during which the polar ice-caps extend towards the equator, covering large areas of the Earth; the alteration of a land surface by a massive movement of ice.
the condition that exists when land is covered with glaciers
Effects on landforms produced by the presence and movement of a glacier.
The transformation of the landscape through the action of glaciers.
process of growth and spreading of ice sheets and glaciers to cover a major portion of the Earth's land (app. 30% during height of Pleistocene glaciations). Deglaciation is the opposite, the shrinking of ice sheets and glaciers to uncover land areas; the world is presently in an interglaciation in which roughly 10% of the land is ice covered.
The transformation of cloud particles from water drops to ice crystals. Thus, a cumulonimbus cloud is said to have a "glaciated" upper portion.
A period of time characterized by the expansion of continental glaciers
A glaciation (a created composite term meaning Glacial Period, referring to the Period or Era of, as well as the process of High Glacial Activity), often called an ice age, is a geological phenomenon in which massive ice sheets form in the Arctic and Antarctic and advance toward the equator. Conversely, the term interglacial or Interglacial Period, such as the current era, is used to denote the absence of large-scale glaciation on a global scale — i.e., a non-Ice Age. Interglacials are, in general, shorter than glacial epochs.