Figure 2
From: Recent Arctic tundra fire initiates widespread thermokarst development

Rapid (a,b) and delayed (c) thermokarst development following the Anaktuvuk River tundra fire. (a) Active layer detachment slides occurred in the first few years following the fire (2009) but were largely stabilized five years post-fire (2012). (b) Retrogressive thaw slumps were also triggered immediately following the fire (2009). They have expanded locally but remained relatively uncommon and have begun to stabilize four years post-fire (2011). (c) Widespread ice-wedge degradation was not evident in the first few years following the fire (2010) but noticeable following the fifth year post-fire (2012). Image pairs show the same location but from slightly different perspectives and in different years. The location of these sites are shown in Fig. 1. Image credits: BLM Alaska Fire Service (a-2009, b-2009, b-2011) and BMJ (a-2012, c-2010, c-2012).