Inhester, B., Baumjohann, W., Greenwald, R. and Nielsen, E. (1981) “Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents: 3. Auroral zone currents during the passage of a westward travelling surge”, Journal of Geophysics, 49(1), pp. 155-162. Available at: https://journal.geophysicsjournal.com/JofG/article/view/156 (Accessed: 2November2025).