Experiments with Model Glaciers

A piece of apparatus was designed with which it was hoped to determine the relative rates at which glacier ice would respond by flow to the same head at varying depth pressures. The primary object of the experiments was frustrated, but measurements were secured which permitted the plotting of a curv...

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Bibliographic Details
Published in:The Journal of geology 1926-04, Vol.34 (3), p.266-274
Main Author: De Lury, Justin S.
Format: Article
Language:English
Subjects:
Alpine glaciers
Crevasses
Cylinders
Glacial landforms
Glacial melting
Glaciers
Ice
Melting
Temperature effects
Zoning
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Summary:A piece of apparatus was designed with which it was hoped to determine the relative rates at which glacier ice would respond by flow to the same head at varying depth pressures. The primary object of the experiments was frustrated, but measurements were secured which permitted the plotting of a curve showing the approximate relation of rate of flow and temperature in ice. A temperature zoning was then introduced in blocks of ice to simulate that supposed to exist in glaciers. On subjecting these blocks or model glaciers to pressure, it was found that warm bottom ice moves out laterally from beneath colder ice and that transverse crevasses are developed by this differential movement. Applications of the results of the experiments to glacial dynamics and to the temperature zoning in glaciers are then briefly discussed.
ISSN:0022-1376
1537-5269
DOI:10.1086/623307