THE INFLUENCE OF MOUNTAIN TOPOGRAPHY AND OF VERTICAL GEOCRYOLOGICAL ZONALITY ON THE PERMAFROST THICKNESS EVOLUTION IN SOUTHERN YAKUTIA
D. O. Sergueev, G. S. Tipenko*, V. E. Romanovsky*, N. N. Romanovsky**, S. L. Berezovskaya***
Institute of Environmental Geoscience, Ulansky str., 13, build. 2, 101000, Moscow, P/O box 145, Russia
* Geophysical Institute, University of Alaska Fairbanks, USA
** Lomonosov Moscow State University, Geological Faculty, Leninskie Gory, GSP-2, 119992, Moscow, Russia
*** Russian Hydrological University, Land Hydrology Faculty, Saint-Petersburg, Russia
Keywords: Alpine permafrost, permafrost thickness, talik, ground water, climate change, numerical modeling
Pages: 33-42
Abstract
The influence of mountain topography on the evolution of alpine permafrost was studied under Southern Yakutia conditions using a two-dimensional finite difference thermal model. The altitudinal zonality in the mean annual ground surface temperature distribution and the spatial heterogeneity of thermal properties and water content of rocks were included in the model. It has been recognized that 100 Kyr, 33 Kyr, 1.5 Kyr and 208 years
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