%0 Dataset
%T The Russian frozen soil dataset (1:250,000)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/986a1ef9-e1f7-4653-8abd-98433884ce17
%W NCDC
%R 10.12072/ncdc.westdc.db3802.2023
%A LI Xin
%K Frozen Ground;Type map;Vectorgraph
%X The 1:2.5 million frozen soil type dataset in Russia is a digitization of the "Geological Map of Russia and Neighboring Republics" series of maps published in Russia from 1991 to 1996 at a scale of 1:250. The maps are annotated in Russian and consist of a total of 16 images. In 1998, Zaitsev et al. translated it into English. For this digitization, 7 themes will be selected for digitization, namely: 1) Distribution of frozen and unfrozen ground，2）Mean annual temperature of frozen and unfrozen ground at the depth of zero annual amplitude，3）Thick of permafrost，4）Depth from the surface and thickness of relict permafrost, 5）Distribution of permafrost containing cryopegs, 6）Thickness of permafrost containing cryopegs, 7）Distribution of permafrost with depth。