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A solifluction meter for permafrost sites

Author

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  • Antoni G. Lewkowicz

Abstract

A solifluction meter that measures soil movements at eight levels in the active layer is described. Anchored in permafrost, the meter transforms mechanical movement of wooden blocks attached to flexible racks into changes in the electrical resistance of potentiometers. Solifluction can be monitored continuously with a data‐logger or manually at intervals when visiting field sites. Preliminary results from meters installed on the Fosheim Peninsula, Ellesmere Island, illustrate frost creep, with heave continuing at ground temperatures between −25°C and −30°C, and summer movements of the active layer in response to thaw consolidation and precipitation. L'auteur décrit un appareil qui mesure dans la couche active les mouvements de sol à 8 profondeurs différentes. Ancré dans le pergélisol, l'appareil transforme le mouvement mécanique de blocs de bois, en modification de résistances électriques par l'intermédiare de potentiomètres. Les mouvements peuvent ětre enregistrés de manière continue ou ětre manuellement mesurés quand les sites sont visitées. Des résultats préliminaires obtenus avec des appareils installés sur la Péninsule de Fosheim, sur l'íle d'Ellesmere, montrent des mouvements de reptation due au gel avec un soulèvement qui continue à des températures de sol entre −25 et −30°C, et des mouvements d'eté de la couche active en réponse à la consolidation lors du dégel ou à la suite de précipitations.

Suggested Citation

  • Antoni G. Lewkowicz, 1992. "A solifluction meter for permafrost sites," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 3(1), pages 11-18, January.
  • Handle: RePEc:wly:perpro:v:3:y:1992:i:1:p:11-18
    DOI: 10.1002/ppp.3430030103
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