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Fig. 3 | Earth, Planets and Space

Fig. 3

From: Evolution of the current system during solar wind pressure pulses based on aurora and magnetometer observations

Fig. 3

Equivalent current vectors during the event in Fig. 1. a Magnetic field before the onset of the PI using 1820 UT as the baseline. The white circle in a shows the South Pole imager FOV mapped to the Northern Hemisphere using IGRF. bh Magnetic fields during the PI and MI using 1834 UT as the baseline. The pink lines visually trace the representative current vectors, and the upward and downward arrows schematically illustrate the upward and downward FACs. The magnetic noon and midnight meridians are marked by the red and blue lines, respectively

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