Fig. 6
From: The first super geomagnetic storm of solar cycle 24: “The St. Patrick’s day event (17 March 2015)”
Profile of magnetic field and plasma parameters for S-N MC of 17 March 2015, in terms of (from top to bottom, a–l): χ 2 of a quadratic fit to latitude of the filed (θ B ), running average of proton plasma beta (β), Dst index, magnetic field in terms of magnitude, latitude (θ B ) and longitude (ϕ B ) in GSE cords., induced electric field (VBs), B z of the field in GSE, ɛ (see, Akasofu 1981), proton plasma thermal speed (V Th), bulk speed (V), and number density (N p). One MC candidate was marked on (a). In (d), an IP shock was indicated by a vertical red-solid line; sheath was bounded between the two red-vertical-solid lines; MC was marked in (d). In (a), χ 2 < 500 was marked in yellow