“Mining and Geological Company MIREKO” LLC (Syktyvkar, Russia):

Oberman N. G., Head of Komi Territorial Center of State Monitoring of Status of Subsoils, Doctor of Geological and Mineralogical Sciences, e-mail: oberman@mireko.ru

There is substantiated the increased importance of estimation of modern frozen subsoils’ conditions and their dynamics during industrial development of the region. Differentiation of reaction of permafrost soils on global warming in terms of landscape, permafrost, hydrogeological and hydrological factors is shown on the basis of 40-year monitoring. Occurred qualitative changes of permafrost conditions are shown in formation of new taliks, complete thawing of thin permafrost soils and decreasing of their area (according to the formed map, the southern border of their extent went 30-40 km northward back in Bolshezemelskaya tundra). The considerable warming of preserved permafrost soils resulted the decreasing of their iciness and accompanying decreasing of load capacity of soils, and nearly universal thermokarst sediments of surface (except peatbogs): to more than 0.6 m for 25 years. There are given the examples of destructive influence of permafrost soils degradation on industrial and civil buildings, on increasing of irrigation of deposits and rivers flow, stimulating the potential increasing of mine and open pit water inflows. The combination of natural factors substantiated the greatest vulnerability of regional permafrost soils to global warming in the permafrost area of the country. There are given the recommendations on minimization of this influence on industrial and civil objects.