Permafrost in Nunavik

Permafrost corresponds to any soil or rock whose temperature has remained below 0°C for years. In the extreme north of Quebec, it is omnipresent and very thick. At its boreal margin, further south, it appears in the landscape as thin isolated patches, which are generally less than 10 m thick. Permafrost contains ice in various forms, the origin of which is closely linked to the sedimentary characteristics and drainage conditions of the terrain. The mapping of permafrost conditions for Nunavik (territory located north of the 55th parallel), carried out by the Centre for Nordic Studies of Laval University, was carried out by applying a simple model called TTOP (Temperature at the Top Of Permafrost) for the period from 2000 to 2016. Model results are presented in the form of a matrix file (raster) that illustrates the distribution of continuous, discontinuous, and sporadic permafrost, as well as isolated islands. Under the effect of global warming or poorly adapted human activities, permafrost is heating up and even thawing, which causes compaction and ground movements affecting ecosystems as well as infrastructure. Thus, the sensitivity of the territory to thermokarstic subsidence was evaluated for the same territory, taking into account the ice content and the temperature at the top of the permafrost. A matrix file (raster) of the territory's susceptibility to soil subsidence due to permafrost thaw has three classes of susceptibility (high, moderate, and low) as well as areas that are generally without permafrost.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Simple

Date ( RI_367 )
2021-12-02
Date ( RI_366 )
2021-12-02
RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - Secteur des forêts - Direction des inventaires forestiers (DIF) ( )
https://www.donneesquebec.ca
Status
historicalArchive; archiveHistorique RI_594
Maintenance and update frequency
notPlanned; nonPlanifié RI_542
Keywords ( RI_528 )
  • Slumps
  • arctic
  • Geocryological characteristics
  • Thermal characteristics
  • Risk Factors
  • Northern Quebec
  • Nunavik
  • Permafrost
  • Permafrost distribution
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Government information
Use limitation
Creative Commons 4.0 Attribution (CC-BY) licence – Quebec (https://www.donneesquebec.ca/fr/licence/)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Spatial representation type
grid; grille RI_636
Metadata language
eng; CAN
Metadata language
fra; CAN
Topic category
  • Geoscientific information
Begin date
0001-01-01
N
S
E
W
thumbnail


Reference system identifier
unknown / unknown / unknown
Distribution format
  • GeoTIF ( unknown )

  • HTML ( unknown )

  • PDF ( unknown )

  • XLS ( unknown )

RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - Secteur des forêts - Direction des inventaires forestiers (DIF) ( )
https://www.donneesquebec.ca
OnLine resource
Permafrost distribution ( HTTPS )

Dataset;GeoTIF;fra

OnLine resource
Susceptibility to soil subsidence associated with permafrost thaw ( HTTPS )

Dataset;GeoTIF;fra

OnLine resource
Open forest ( HTTPS )

Dataset;HTML;fra

OnLine resource
Open forest ( HTTPS )

Dataset;HTML;fra

OnLine resource
Original metadata (https://www.donneesquebec.ca) ( HTTPS )

Dataset;HTML;fra

OnLine resource
READ TO ME ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Map of permafrost in northern Quebec ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Susceptibility to soil subsidence associated with permafrost thaw ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Production of the 2nd approximation of the Quebec permafrost map according to geomorphological, ecological parameters and physical processes related to the climate ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Identification and analysis of Nunavik's vulnerabilities based on environmental components and natural physical processes related to the climate: Phase 1 ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Fact sheet of attributes and their value areas ( HTTPS )

Dataset;XLS;fra

File identifier
ac5d0559-d47c-432b-905a-d69d9d71b2a5 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2023-08-31
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
HNAP ISO:19115 - 2003
RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - Secteur des forêts - Direction des inventaires forestiers (DIF) ( )
https://www.donneesquebec.ca
 
 

Overviews

overview

Spatial extent

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thumbnail


Keywords


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