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TitleThe ground thermal regime across the Mackenzie Valley corridor, Northwest Territories Canada
AuthorBonnaventure, P P; Smith, S LORCID logo; Riseborough, D W; Duchesne, CORCID logo; Ednie, M
Source 2015, 8 pages
Alt SeriesEarth Sciences Sector, Contribution Series 20150116
PublisherCanadian Geotechnical Society
MeetingGeoQuebec 2015, 7th Canadian Permafrost Conference and 68th Canadian Geotechnical Conference; Québec; CA; September 20-23, 2015
Mediapaper; on-line; digital
File formatpdf
ProvinceNorthwest Territories
NTS85; 86; 87B; 87C; 87F; 87G; 94I; 94J; 94K; 94L; 94M; 94N; 94O; 94P; 95; 96; 97; 105; 106; 107
AreaMackenzie Valley
Lat/Long WENS-140.0000 -112.0000 72.0000 57.5000
Subjectsenvironmental geology; regional geology; Nature and Environment; freezing ground; ground temperatures; permafrost; thermal analyses; groundwater; groundwater temperatures
Illustrationslocation maps; graphs; equations
ProgramClimate Change Geoscience Land-based Infrastructure
AbstractGround thermal data generated from an enhanced monitoring network has been summarized for the Mackenzie Valley corridor, Northwest Territories. The snapshot developed for 2007-09 provided a baseline against which future change in ground thermal conditions can be measured as well as providing essential information to support land use planning decisions in the region. Comparison of ground temperatures measured during 2012-14 to the baseline indicates some recent warming of permafrost has occurred with greater changes in ground temperature occurring in colder permafrost in the northern portion of the corridor.
Summary(Plain Language Summary, not published)
A summary of the features of the ground thermal regime in the Mackenzie Valley corridor is provided. Data collected from over 70 permafrost monitoring sites has been utilized to develop a baseline of permafrost thermal state for 2007-09. Analysis of recent data indicates that current ground temperatures at many sites are higher than the baseline values. Essential information is provided for a major transportation corridor on permafrost thermal state and the sensitivity of permafrost to climate change.

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