Permafrost distribution changes across Alaska, as seen in the permafrost map to the right. The diagram below shows a profile view of permafrost across Alaska, with the average depths and temperatures. South of the Alaska Range (home to Mount Denali), permafrost occurs in isolated patches in the sporadic zone. In the discontinuous zone, permafrost occurs in patches covering 50% to 90% of the land area. In the continuous zone, from the Brooks Range north, permafrost covers more than 90% of the land area.

Permafrost distribution changes across Alaska, as seen in the permafrost map above. The diagram below shows a profile view of permafrost across Alaska, with the average depths and temperatures. South of the Alaska Range (home to Mount Denali), permafrost occurs in isolated patches in the sporadic zone. In the discontinuous zone, permafrost occurs in patches covering 50% to 90% of the land area. In the continuous zone, from the Brooks Range north, permafrost covers more than 90% of the land area.