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1997 data provides polygon maps of permafrost extent, temperature, boundaries, and ground ice thickness for all of Russia. The ESRI Shapefiles were digitized from paper maps in the World Atlas of Snow and Ice Resources, with source scales from 1:20,000,000 to 1:40,000,000. This dataset was extracted from the Land Resources of Russia collection, copyrighted in 2002 by the International Institute for Applied Systems Analysis and the Russian Academy of Sciences.
License is specified as 'other-license-specified'; users must review the 2002 copyright from IIASA and the Russian Academy of Sciences. Data is available in BIN, ISO, and HTML formats alongside the primary geospatial files.