Fig. 2From: ULF impulsive magnetic response at mid-latitudes to lightning activityThe example of the ULF impulse for the stroke on 10/29, 22:53:42 (J = -50 kA, R = 315 km) detected by the induction magnetometer at MOS: wave forms of H and D components. Right-hand insert shows the map with location of lightning, marked by star. The length and darkness of a lobe on the circular diagram corresponds to the intensity of the pulse energy flow.Back to article page