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TitreUpdated characterization of permafrost thermal conditions in the Mackenzie Delta region
AuteurSmith, S
SourceCanada - United States Northern Oil and Gas Research Forum 2010, programs and abstracts; 2010.
LiensOnline - En ligne, Presentation (PDF 7.9 MB)
Séries alt.Secteur des sciences de la Terre, Contribution externe 20100167
RéunionCanada - United States Northern Oil and Gas Research Forum; Calgary; CA; Novembre 30 - décembre 2, 2010
Mediaen ligne; numérique
ProvinceTerritoires du Nord-Ouest
SNRC106M; 106N; 107B; 107C
Lat/Long OENS-137.0000 -131.0000 70.0000 67.5000
Sujetspergélisol; regimes thermiques; glace massive; trous de mine; géologie des dépôts meubles/géomorphologie; Quaternaire
Programmepipeline nordiques, Géoscience de l'environnement
Résumé(disponible en anglais seulement)
Permafrost is an important component of the landscape of the Mackenzie Delta region and has an important influence on ecosystems and resource development. Permafrost and its associated ground ice can influence drainage and terrain stability and can present challenges to the design of production and transportation facilities associated with oil and gas development. Updated and reliable information on permafrost thermal state is critical for engineering design, environmental assessment and sound environmental management of resource development projects.
With support from the Northern Energy Development Initiative, the Geological Survey of Canada in collaboration with Indian and Northern Affairs Canada, undertook a major field program to address gaps in our knowledge of ground thermal conditions in the Mackenzie Delta region. These efforts resulted in the establishment of about 25 new instrumented boreholes up to 20 m deep. New information has been generated on ground thermal conditions for areas where little recent information was available. The new field data along with data collected from existing long-term monitoring sites have led to a more complete characterization of current baseline permafrost conditions in the Mackenzie Delta region. Collaboration with US colleagues has enabled the development of a new map and database presenting a current snapshot of permafrost thermal state for northwestern Canada and Alaska.
Key publicly available databases have been generated from the project, disseminating information on permafrost temperatures and active layer conditions for use by industry, regulators, land managers and local communities. The information generated and the enhanced permafrost monitoring network in the region have contributed to improved understanding of the regional environmental framework, provide a baseline to support cumulative impact assessment and are key components of future environmental monitoring and management programs associated with resource development projects.