Mayo, Yukon Territory, lies in the widespread discontinuous permafrost zone. Nearby, permafrost thicknesses of up to 40 m have been measured in valleys, and of up to 135 m at higher elevations. Geothermal modeling suggests that if ground temperatures were previously in equilibrium with a near-surface temperature of approximately -3.0°C, then it has taken about 20 years for permafrost to reach present conditions. Observed changes in mean winter temperature and snowfall have probably caused the ground warming. -from Author

Department of Geography and Environmental Studies

Burn, C. (1992). Recent ground warming inferred from the temperature in permafrost near Mayo, Yukon Territory. Periglacial geomorphology. Proc. 22nd annual symposium in geomorphology, Binghamton, 1991, 327–350.