Fig. 2.From: Detecting ionospheric TEC perturbations caused by natural hazards using a global network of GPS receivers: The Tohoku case studyIonospheric TEC perturbations for three days on March 10 to 12, 2011 using a global network of GPS receivers. High-latitude ionospheric disturbances are circled. We also show the Tohoku event generated TEC perturbations along with traveling ionospheric disturbances several hours following the event. AE and DST indices also shown for the three consecutive days.Back to article page