Fig. 1From: Automated detection of geomagnetic storms with heightened risk of GICA typical geomagnetic storm onset as a CME shock front seen in the solar wind speed data (thin gray line, measured by ACE at a distance of 1.5 × 106 km) and an SSC on Earth (thick blue line, measured at the Conrad Observatory). Both the CME shock and SSC are easily identifiableBack to article page