Provision of the Reliability of Bases and Foundations under Gas Production and Gas Transport Facilities in the North of Western Siberia in the Conditions of Climate Warming and Permafrost Degradation

摘要

Climatologists' and geocryologists' investigations testify to the presence of the long-term trend to the increase in annual mean air and permafrost temperature within the major part of the Russian Federation. The increase in the annual mean air temperature between 1976 and 2010 made up 0.52°C/10 years on average for the territory of Russia. The warming during the recent 30-35 years is estimated by the value 0.42°C/10 years for Western Siberia, according to the data of the Rosgidromet (the Federal Service for Hydrometeorology and Environmental Monitoring). The data of regime monitoring of few geocryological stations operating in Western Siberia confirm the presence of the annual mean permafrost temperature increase by 0.03°C/year on average.