Accession Number : AD0601257

Title :   ICE RESEARCH.

Descriptive Note : Annual rept. 1963

Corporate Author : MCGILL UNIV MONTREAL (QUEBEC) MACDONALD PHYSICS LAB

Personal Author(s) : Pounder,E. R. ; Langleben,M. P.

Report Date : 21 JAN 1964

Pagination or Media Count : 21

Abstract : The micrometeorological equipment of the Project was increased by the purchase of a system for measuring humidity using lithium chloride cells. Considerable testing and modification of all this equipment was done preparatory to setting up a station on the ice of Tanquary Fjord, Ellesmere Island, N. W. T. in the spring and summer of 1964. The object is to study the magnitudes of the various energy fluxes between the ice and the atmosphere during the decay of sea ice. A first, partially successful attempt to study the movement of ice in this fjord using time-lapse photography was made in the summer of 1963. Work on the electrical conductivity and dielectric coefficient of sea ice was continued, though hindered by difficulties with the cold room. Measurements taken confirm that the apparent dielectric coefficient is extraordinarily large at audio frequencies. The study of the use of gravity measurements to find glacier depths was completed. So also was the instrumental work on a method of generating shear wave pulses for finding the transit time of a shear wave in ice. Preliminary laboratory measurements on Poisson's ratio for sea ice, using this equipment, do not agree with the values found in earlier field work using a resonance technique. (Author)

Descriptors :   (*ICE, SCIENTIFIC RESEARCH), ICE ISLANDS, GLACIERS, THERMAL PROPERTIES, ELECTRICAL PROPERTIES, MECHANICAL PROPERTIES, GRAVITY, CRYSTAL GROWTH, SALINITY, PHOTOGRAPHIC ANALYSIS, METEOROLOGICAL INSTRUMENTS, MEASUREMENT, NORTHWEST TERRITORIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE