Professional Paper 1386–A
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Figure 6–1. Map showing areal distribution of permafrost regions in the Northern Hemisphere. Prepared in 2007 by the Permafrost Laboratory, Geophysical Institute, University of Alaska Fairbanks. Map derived from the electronic version of the “Circum-Arctic Map of Permafrost and Ground-Ice Conditions” (Brown and others, 1997, http://nsidc.org/fgdc/).