UAV-electromagnetic measurements to map variations of depth to bedrock in southern Sweden
In the context of an infrastructure project UAV-electromagnetic measurements at five areas in southern parts of Sweden are conducted to study the variation of depth to the bedrock. The source signals are the distant radio transmitters in the band 15-350 kHz. The example shown in this work is from Area 5 where the underlying bedrock is a gneissic granite with reasonably high resistivity. The resist