Fig. 9From: The AUTUMNX magnetometer meridian chain in Québec, CanadaObservations relevant to interpretation of a substorm-SMC connection for the event of February 17, 2015. The bottom and top panels show the B Y component at locations west and east of the inferred central meridian of a substorm that took place between 6 and 7 UT. The middle panel shows the B X component (relative to the value at the start of the day) at NRCan station Fort Churchill, inferred to be near the center of the substorm current wedgeBack to article page