BUBBLES AND BUBBLE PRESSURE IN ANTARCTIC GLACER ICE.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1968
- Accession Number
- AD0680181
Entities
People
- Anthony J. Gow
Organizations
- Cold Regions Research and Engineering Laboratory