BUBBLES AND BUBBLE PRESSURE IN ANTARCTIC GLACER ICE.

An exceptional opportunity to study changes in the pressure, distribution and structure of bubbles as a function of depth in the Antarctic ice sheet arose during the IGY (1957-58) when ice cores were obtained to depths of 308 m and 254 m at Byrd Station and Little America 5 respectively. Approximate...

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Bibliographic Details
Main Author: Gow,Anthony J.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1968
Subjects:
Snow
Ice and Permafrost
*GLACIERS
*ANTARCTIC REGIONS
*BUBBLES
*ICE
PRESSURE
DENSITY
MECHANICAL PROPERTIES
MEASUREMENT
LOADS(FORCES)
TEMPERATURE
Antarctic
Byrd
Byrd Station
Little America
The Antarctic
Antarc*
Ice
Ice Sheet
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0680181
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0680181
Description
Summary:An exceptional opportunity to study changes in the pressure, distribution and structure of bubbles as a function of depth in the Antarctic ice sheet arose during the IGY (1957-58) when ice cores were obtained to depths of 308 m and 254 m at Byrd Station and Little America 5 respectively. Approximately 100 samples of ice from both locations were used to obtain fourth-place density measurements and these data, in conjunction with observations of bubble structure in thin sections of ice, have been used to accomplish the following objectives: To investigate the relationship between bubble pressure and the in situ overburden pressure and to determine, if possible, the depth at which the difference in pressures is reduced to less than 1-2 kg/sq cm. To investigate the pattern of changes in the size, shape, number and distribution of air bubbles as a function of depth in the Antarctic ice sheet. (Author)

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