Recent Permafrost Degradation in Bogs of the James Bay Area, Northern Quebec, Canada

Small palsas with very thin frozen layers are present within the peat deposits east of James Bay. Most of these permafrost landforms are in an advanced stage of decay within raised bogs between 51 degrees 45'N and 55 degrees N. Air photographs, air-borne surveys and ground-truthing of permafrost indicate a recent northward ward recession of the permafrost boundary by about 130 km, most of which likely happened in the past 50 years. Copyright (C) 2009 John Wiley & Sons, Ltd.