USING QUARTZ LUMINESCENCE FROM TEMPER IN ARCHAEOLOGICAL POTTERY TO INFER THE INTENSITY OF PAST WILDFIRES IN THE SOUTHWESTERN US
The luminescence signal of individual quartz grains in pottery temper from each fire context will be used to test my hypothesis that recent fire intensity is greater than past natural wildfire conditions prior to Euro-American Forest management and anthropogenic climate change. Limited observations support my hypothesis, pottery exposed to recent high-intensity fire has produced modern (reset) luminescence signals, while ceramics exposed to centuries of historical fires retain their archaeological age. Such results may indicate that modern fires are burning hotter and longer due to decades of fuel accumulation in response to drier, more flammable fuels and longer burn seasons due to climate change. The approach and results of this study could provide a unique proxy of past wildfire conditions that can be used to test the importance of fuel conditions and climate change on fire intensity.