Accession Number:

AD0680181

Title:

BUBBLES AND BUBBLE PRESSURE IN ANTARCTIC GLACER ICE.

Descriptive Note:

Research rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

Report Date:

1968-10-01

Pagination or Media Count:

24.0

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 kgsq 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

Subject Categories:

  • Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE