Atmospheric Electricity - Ultra and Extremely Low Frequency Electromagnetic Fields - page 93

Fig. 3.26 ELF electromagnetic perturbations as observed in the Hokuriku area, Japan (37:48 ı N,
136:76 ı E) on February 03, 2007 during a sprite-associated event. The first and middle panels
show north-south and east-west, H NS and H EW , magnetic field components while vertical electric
field, E z , is displayed in bottom panel. The vertical red line at approximately 0.05 s indicates a
moment of sprite flash. Adapted from Surkov et al. ( 2010 )