Home – Home – Jornals – Journal of Applied Mechanics and Technical Physics 2026 number 5

Computational studies of temperature variations in permafrost soils under various external boundary conditions are performed. The calculations use the results of laboratory studies of the thermophysical characteristics of soils in the thawed and frozen states, as well as the results of in situ soil temperature measurements in Norilsk, Russia. The boundary conditions of the computational model at the outer soil surface are specified using the snow cover thickness and the radiation balance. The variation of the radiation balance over the annual cycle is obtained for Norilsk's climatic conditions. A decrease in the moisture content of the surface soil layers is shown to reduce the influence of phase transitions on the thermal inertia of the soil, leading to an increase in the thickness of the soil layer with annual temperature fluctuations, an increase in the thaw depth, and a drop in the soil temperature below the thaw zone. Data are obtained on the temperature distribution over the depth of permafrost soils under various boundary conditions over a long-term cycle for Norilsk's climate.