Permafrost existence and distribution in the Chic-Chocs Mountains, Gaspesie, Quebec

Download
  1. (PDF, 2 MB)
  2. Get@NRC: Permafrost existence and distribution in the Chic-Chocs Mountains, Gaspesie, Quebec (Opens in a new window)
AuthorSearch for: ; Search for:
TypeArticle
Journal titleGéographie Physique et Quaternaire
ISSN0705-7199
Volume33
Issue3-4
Pages299316; # of pages: 18
SubjectPermafrost; Soils; Sol
AbstractGround temperature studies, begun in 1977, revealed the presence of permafrost at the summit of Mont Jacques- Cartier (1270 m), in Gaspésie. Temperature profile data to a depth of 30 m in a drill hole indicates an active layer slightly thicker than 5.75 m, overlying a permafrost body extending beyond the base of the hole. Downward extrapolation of the profile, based on heat flow data and thermal conductivity measurements show that this permafrost body is from 45-60 m thick. That the permafrost is contemporary is indicated by the proximity of the permafrost table to the surface, by the low mean annual air temperature for the site (-3 degrees C to -5 degrees C), and by the lack of a thick insulative blanket of snow in the winter. A mean annual ground surface temperature of -1 degree C to -1.5 degrees C is estimated for the site. The Mont Jacques- Cartier data enabled a regional lower limit of 1,000 - 1,100 m to be established for extensive permafrost in the Chic- Chocs Mountains in treeless exposed situations. A limited amount of ground temperature data from Mont Logan and Mont Albert tends to confirm the validity of this regional limit, which was then used, in association with our knowledge of the vegetation cover, to map the distribution of extensive permafrost bodies for the entire eastern Chic-Chocs Mountains.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-911
NRC number18355
278
NPARC number20374450
Export citationExport as RIS
Report a correctionReport a correction
Record identifier278bc447-9cf0-4261-a0a3-801088b7e59e
Record created2012-07-23
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)