This is where aerial thermographic mapping can provide a cost effect solution. Using drones equipped with state of the art thermal cameras and flown under the correct thermographic conditions, changes to the subsurface temperatures within a solid waste site can be detected and monitored where necessary over time. The resulting images can be used as a tool to pinpoint areas for further ground-based investigation or remedial action.
Whilst drone thermal surveys are undoubtedly more effective at identify shallow hot spots, they can also be used to provide indications of surface heating from deeper hot spots. From here, more detailed investigation from ground-based teams can be used to establish the depth and precise location of the core of the problem.