Академическое издательство «Гео»

Permafrost heterogeneity, ground, temperature variations, soil cover, tundra, physical modeling

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«Earth`s Cryosphere», 2018, Vol. XXII, № 5, p. 17-25

Physical modeling of surface temperature contrasts on samples of tundra soil cover

S.G. Kornienko

Oil and Gas Research Institute, RAS, 3, Gubkina str., Moscow, 119333, Russia; spaceakm2@ogri.ru

The results of modeling temperature contrasts on the surface of single-layer and multi-layer columns containing samples of ground, substrate and tundra soil cover using an open-type simulation setup are provided, in which the temperature differences of varying permafrost conditions are simulated. Quantitative indicators of the extent of attenuation of temperature variations in the ground by lichen cover of different thickness are evaluated. Maximum (daytime) and minimum (night) values of the temperature on the surface of the samples do not differ significantly from the average values, indicating the possibility of investigating the nature of temperature anomalies on the surface of the tundra soil cover related to permafrost heterogeneity by simultaneous measurements of the soil surface temperature at any time of the day. The possibility of using the setup to characterize the thermophysical properties of soil samples and of the soil cover, as well as to study and simulate phase transitions of water, is demonstrated.

Permafrost heterogeneity, ground, temperature variations, soil cover, tundra, physical modeling

DOI: 10.21782/EC2541-9994-2018-5(17-25)

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