1. Deep-seated creep of massive ground ice, Tuktoyaktuk, NWT, Canada
- Author
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J. G. Bisson, F. M. Nixon, S. R. Dallimore, and P. A. Egginton
- Subjects
Arctic ,Creep ,Slope stability ,Late winter ,Permafrost ,Geomorphology ,Thermal contraction ,Ground ice ,Geology ,Earth-Surface Processes - Abstract
A study of the in situ creep deformation of massive ground ice has been carried out at a field site near the village of Tuktoyaktuk, NWT. Cumulative surface displacements, accounted for by creep deformation to a depth of 25 m, vary from about 3 mm/a at the upslope site to 4 mm/a at the downslope site. While net displacements on a year to year basis were downslope, the creep pattern at both sites displays a quasi-sinusoidal fluctuation, with significant seasonal upslope movement during the late winter and early summer. This fluctuation is thought to be due to the effects of thermal contraction. © 1996 John Wiley & Sons, Ltd.
- Published
- 1996
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