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Detailed Reference Information |
De La Chapelle, S., Milsch, H., Castelnau, O. and Duval, P. (1999). Compressive creep of ice containing a liquid intergranular phase: Rate-controlling processes in the dislocation creep regime. Geophysical Research Letters 26: doi: 10.1029/1998GL900289. issn: 0094-8276. |
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Experiments have been conducted to investigate the effect of melt on the creep behavior of polycrystalline ice deformed in the dislocation creep regime. The transition between a mode with a stress exponent n=3 and a mode with n<2 is observed for both melt-free and melt-added ice samples. The large influence of the melt phase is not related to the wetting characteristics of the liquid. Owing to the large plastic anisotropy of the ice crystal, the liquid phase would attenuate the internal stress field which develops during the primary creep. The contribution to the deformation of the basal slip (the weaker slip system) would increase with the melt content. ¿ 1999 American Geophysical Union |
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Abstract |
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Keywords
Mineral Physics, Creep and deformation, Physical Properties of Rocks, Plasticity, diffusion, and creep |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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