CGRG Bibliography of Canadian Geomorphology
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Author : Evans, K.; Goodman, D.J.; and Holdsworth, G.
Date : 1978
Title : Recording wire strainmeters on the Barnes Ice Cap, Baffin Island, Canada
Publication : Journal of Glaciology
Issue : 20(83):
Page(s) : 409-423
Abstract
The report described an experiment to evaluate the use of geophysical (Cambridge-type) wire strainmeters for the rapid acquisition of strain-rate data and to compare strains on a large ice mass over gauge distances of 5 m, 50 m, and 1 km. Three continuously recording wire strainmeters were installed at the center of two separate arrays of strain poles 10.6 km and 19.5 km from the ice divide on the Barnes Ice Cap. Data were collected between 24 April and 15 May 1976. The 1 km strain arrays had been measured previously in 1974 and 1975. The results showed good agreement between the strainmeter data and the larger strain arrays at the 10.6 km site, but results differed at the 19.5 km site. When the daily means were calculated for the strainmeters at the 19.5 km site, the strain-rates showed a possible periodic variation with an apparent period of about 11 d. Since there appears to be no direct correlation between the strainmeters signal and either temperature or pressure, the result was assumed to represent real varying strain within the ice
Bibliography of Canadian Geomorphology