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Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 2 | Geoscience Letters

Fig. 2

From: Modifications of the ionosphere prior to large earthquakes: report from the Ionosphere Precursor Study Group

Fig. 2

Occurrence rate of ionosphere disturbance at Kokubunji. Top panel shows the number of the earthquakes of different magnitudes (black bar for EQs of 6.0 ≤ M < 6.5, yellow bar for the EQs of 6.5 ≤ M <7.0, and red bar for M ≥ 7). Gray and black lines in the lower three panes indicate the event percentage of positive and negative anomaly, respectively. Gray and black bars indicate difference of the number of the cases for positive and negative deviation, respectively

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