EVALUATING THE USE OF DISTRIBUTED TEMPERATURE SENSING FOR PERMAFROST MONITORING IN SALLUIT, NUNAVIK

Jonathan Roger, Michel Allard, Denis Sarrazin, Emmanuel L'Hérault, Guy Doré, Anick Guimond

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: In Situ Testing, Instrumentation, and Monitoring in Cold Regions / Essais insitu et instrumentation en milieu nordique

ABSTRACT: Fiber optics distributed temperature sensing (DTS) is a new technology. It opens the doors on original approaches to study permafrost temperature regime in a variety of environmental settings and engineering situations. An opportunity presented itself to try this new technology in 2012 as it was decided to rebuild the Salluit road to the community airport. It had been seriously impacted by permafrost degradation. A total length of 3.4 km of DTS cable was buried under the embankment slope, on both sides of the road. The data obtained allowed detection of localised heat sources along its length and gave temperature variations both in time and space since 2012.

RÉSUMÉ: (DTS) est une nouvelle technologie qui ouvre la porte à des approches originales pour étudier le régime de température du pergélisol dans une variété de contextes environnementaux et des situations d'ingénierie. Québec (MTQ) a décidé de reconstruire la route reliant l'aéroport de Salluit au village gravement affectée par la velle technologie a été initialement retenue. Un total de 3.4 km Les données de température linéairement a permis la détection de sources ponctuelles de chaleur tout au long de la route et a aussi temporelle de la température depuis 2012.

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