RT Journal T1 Permafrost response to climate change in the Northern Tien Shan A1 Eduard Severskiy PB Sciences in Cold and Arid Regions FD 2017-08-01 YR 2017 JF Sciences in Cold and Arid Regions JO Sciences in Cold and Arid Regions VO 9 IS 4 SP 398 DO 10.3724/SP.J.1226.2017.00398 K1 permafrost;temperature;thickness;geophysics;tectonic faulting;anthropogenic impact LK {http://www.scar.ac.cn/CN/article/article_72.shtml}