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19 lis 2015 · Definition of a glacier. A glacier is a permanent (on a human time scale, because nothing on the Earth is really permanent) body of ice, consisting largely of recrystallized snow, that shows evidence of downslope or outward movement due to the pull of gravity.
1 sty 1998 · PDF | Scientific interest in glaciers and glaciation dates back at least 200 years, but the knowledge explosion of the past 20 years has been... | Find, read and cite all the research you...
For the reader in a hurry, the new Cuffey and Paterson fourth edition of The physics of glaciers defines the science of glaciers even better than the first three editions, and is a must-read for students and professionals in the field.
The episodic nature of the Earth's glacial and interglacial periods within the present Ice Age (the last couple of million years) have been caused primarily by cyclical changes in the Earth's circumnavigation of the Sun. Variations in the Earth's eccentricity, axial tilt, and precession comprise the three dominant cycles, collectively known as t...
recognize that glaciation was the most natural explana-tion for the erratic boulders, moraines, and deeply scratched bedrocks that could be found in many places in the Alps, Scotland, and North America. Though sev-eral others had suggested major glacial advances before, Agassiz widely promoted the idea of an ice age and
2.1 Introduction. 2.2 Snow, Firn, and Ice. 2.2.1 Density of Ice. 2.3 Zones in a Glacier. 2.3.1 Distribution of Zones. 2.4 Variation of Density with Depth in Firn. 2.5 Snow to Ice Transformation in a Dry-snow Zone. 2.5.1 Processes. 2.5.2 Models of Density Profiles in Dry Firn. 2.5.3 Reduction of Gas Mobility. 2.6 Hoar Layers.
A knowledge of glacial systems and glaciated landscapes is an asset in subject areas beyond their traditional home in geography; for example, in earth sciences, physics, engineering, and biological sciences.
