Climate Change 2001:
Working Group II: Impacts, Adaptation and Vulnerability
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Figure 16-7: (a) Zonation of permafrost in the northern hemisphere under climate scenario predicted by ECHAM1-A GCM (Cubasch et al., 1992). (b) Hazard potential associated with degradation of permafrost under ECHAM1-A climate change scenario. Map represents areas of stable permafrost and low, moderate, and high susceptibility to subsidence. Classification is based on a "thaw-settlement index" calculated as the product of existing ground-ice content (Brown et al., 1997) and predicted increases in depth of thaw (Anisimov et al., 1997). Hazard-zone intervals were derived through division of resulting frequency distribution, using a nested-means procedure (Scripter, 1970).

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