Figure 1
From: A naturally-occurring ‘cold earth’ spot in Northern China
Distribution of low ground temperature anomalies outside of the continental permafrost bodies.
Maps were generated using GIS software (ArcGIS 8.0, http://resources.arcgis.com/) and the permafrost distribution data was from the International Permafrost Association27. Many ‘cold earth’, i.e. low ground temperature anomaly (LGTA, marked as L-number for short) have been reported to occur on scree or talus slopes spreading away from the present southern or lower limit of permafrost (Table 1). The studied robust permafrost site (marked as L-15) in North China is the southernmost in the Northern Hemisphere, except the one marked L-13, which is on the Qinghai-Tibet Plateau with much higher elevation (4,700 m ASL.).
