Density of Glacier Ice

Glaciers are moving masses of ice of atmospheric origin, containing a considerable amount of enclosed air. As new layers accumulate in regions of glacier nourishment, glacier ice is buried to very great depths from the surface (sometimes to 3-1 km), while in regions where the glacier is diminishing,...

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Bibliographic Details
Main Author: Shumskii,P. A.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1971
Subjects:
Snow
Ice and Permafrost
(*ICE
DENSITY)
(*GLACIERS
GROWTH(PHYSIOLOGY))
THICKNESS
MELTING
PRESSURE
SURFACE PROPERTIES
VOLUME
COMPRESSIVE PROPERTIES
STRUCTURAL PROPERTIES
GEOLOGIC AGE DETERMINATION
USSR
TRANSLATIONS
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0720057
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0720057
Description
Summary:Glaciers are moving masses of ice of atmospheric origin, containing a considerable amount of enclosed air. As new layers accumulate in regions of glacier nourishment, glacier ice is buried to very great depths from the surface (sometimes to 3-1 km), while in regions where the glacier is diminishing, the ice melts out towards the surface. As the ice is buried, it is compressed and densified under pressure of overlying layers, but as it returns to the surface, it partially expands again and becomes less dense. The pressure at depth in the glacier depends both on the depth below the surface and on the density of the ice, and the latter changes also under the influence of temperature differences between different parts of the glacier. At a given rate of accumulation or melting of the ice on the surface, the rate of submergence or rise of the ice at depth is related to its densification or expansion. Accordingly, the age of the ice also differs at this or that depth. (Author) Trans. from Akademiya Nauk SSSR. Doklady, v126 n4 1959.

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