Plastic Faulting in Saltwater Ice
Compression experiments on laboratory-grown columnar S2 saltwater ice loaded triaxially through proportional loading at T = –20°C at applied strain rates of ε = 10–5–10–1 s–1 demonstrate that plastic (P) faulting is a mode of failure in saltwater ice when rapidly loaded under a high degree of confin...
Published in: | Journal of Glaciology |
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Main Authors: | , , , |
Format: | Text |
Language: | unknown |
Published: |
Dartmouth Digital Commons
2014
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Subjects: | |
Online Access: | https://digitalcommons.dartmouth.edu/facoa/1755 https://doi.org/10.3189/2014JoG13J178 https://digitalcommons.dartmouth.edu/context/facoa/article/2758/viewcontent/j13J178.pdf |
Summary: | Compression experiments on laboratory-grown columnar S2 saltwater ice loaded triaxially through proportional loading at T = –20°C at applied strain rates of ε = 10–5–10–1 s–1 demonstrate that plastic (P) faulting is a mode of failure in saltwater ice when rapidly loaded under a high degree of confinement. In terms of microstructure, mechanical behavior and strength, saltwater ice that fails via P-faulting is almost indistinguishable from columnar S2 freshwater ice that fails via P-faulting loaded under the same conditions. The results also demonstrate that saltwater ice loaded rapidly may exhibit yet another mode of failure, in addition to P-faulting, through what appears to be a mechanism of pore collapse. |
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