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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: Analysis of ionospheric storm-time effects over the East African sector during the 17 March 2013 and 2015 geomagnetic storms

Fig. 1

Solar wind parameters for a strong geomagnetic storm that occurred between 16 and 18 March 2013. Panels present variations of (a) solar wind speed, \(V_{SW}\) (km/s), (b) z component of interplanetary magnetic field, IMF Bz (nT), (c) SYM-H (nT) and (d) solar wind pressure, \(P_{sw}\) (nPa) with time. The grey shaded region represents the main phase of the geomagnetic storm. The dotted red line represents the threshold value for \(P_{sw}.\) 

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