Permafrost

Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the area covered by permafrost across Canada. Permafrost is a term used to describe the thermal condition of earth materials, such as soil and rock, when their temperature remains below 0 degrees Celsius continuously for more than one year. The map also shows localities where pingos occur. Pingos are material uplifted by an ice core, creating symmetrical hills that may be up to 0.4 kilometers in diameter.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 19:56 (UTC)
Created	April 17, 2026, 19:56 (UTC)
contact_email	geoinfo@nrcan.gc.ca
contact_person	{}
criticality_level	[]
data_dictionary	["environment"]
geographic_scope	[]
open_canada_collection	geogratis
open_canada_date_published	1973-01-07 00:00:00
open_canada_keywords	{"fr": ["calotte glaciaire", "glacier", "pergélisol", "température"], "en": ["glaciers", "ice caps", "permafrost", "temperature"]}
open_canada_subject	["nature_and_environment"]
sensitivity_level	unrestricted
title_fr	Pergélisol
update_frequency	as_needed