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Fig. 1 | Earth, Planets and Space

Fig. 1

From: Estimating the solar wind conditions during an extreme geomagnetic storm: a case study of the event that occurred on March 13–14, 1989

Fig. 1

Magnetic field variations at geosynchronous orbit on March 13–14, 1989, observed by Geostationary Operational Environmental Satellites (GOES) 06 and 07 are represented by red and blue lines, respectively. The magnetic field intensity, geocentric solar magnetospheric (GSM)-X, GSM-Y, and GSM-Z components of the magnetic field variations, and the variation of the Dst index are plotted from top to bottom. Two dotted vertical lines indicate the first and the second storm sudden commencement (SSC), respectively

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