CGRG Bibliography of Canadian Geomorphology
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Author : Fisher, D.A.
Date : 1987
Title : Enhanced flow of Wisconsin ice related to solid conductivity through strain history and recrystallization
Publication : The Physical Basis of Ice Sheet Modeling. International Association of Hydrological Sciences Press, Institute of Hydrology, Wallingford, Oxfordshire; UK.
Issue :
Page(s) : 45-51
Abstract
Diameters of three holes in Agassiz Ice Cap, Ellesmere Island, Canada, have been logged annually, and the cores measured for delta(18)O and solid conductivity (ECM), an indicator of acid volcanic impurities. Enhanced flow of late Wisconsin ice as inferred from hole closure data, is negatively correlated with ECM attenuation. suggest that over time, recrystallization concentrates the acid impurities into a quasi-liquid layer at grain boundaries, where they become neutralized. At the same time, increasing total strain developed a c-axis alignment. Both of these effects ehance the ice flow as a function of distance down the flow line
Bibliography of Canadian Geomorphology