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Ice segregation and gas distribution in permafrost using tomodensitometric analysis

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  • Fabrice Calmels
  • Michel Allard

Abstract

Ice lenses, soil layers, faults, sedimentary structures and gas bubbles in permafrost cores were imaged using a computed tomography scanner. Two kinds of images were produced: two‐dimensional sections which allow ice, gases and soil volumetric contents to be measured, and virtual three‐dimensional reconstructions of the entire core. Volumetric ice and gas contents were measured at 60% and 2% respectively. Ice and gas contents appear to be independent of each other along the stratigraphic profile. The shape and spatial distribution of gaseous inclusions in the permafrost provide some clues on gas source and on the thermo‐mechanics of ice segregation during permafrost aggradation. Copyright © 2004 John Wiley & Sons, Ltd.

Suggested Citation

  • Fabrice Calmels & Michel Allard, 2004. "Ice segregation and gas distribution in permafrost using tomodensitometric analysis," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 15(4), pages 367-378, October.
    • Handle: RePEc:wly:perpro:v:15:y:2004:i:4:p:367-378
    DOI: 10.1002/ppp.508
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    Cited by:

    1. Sergey V. Alexeev & Ludmila P. Alexeeva & Yurij K. Vasil'chuk & Artem A. Svetlakov & Natalia V. Kulagina, 2021. "Permafrost of the Oka Plateau (Eastern Sayan Ridge)," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 32(3), pages 368-391, July.

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