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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Measuring seismicity diversity and anomalies using point process models: case studies before and after the 2016 Kumamoto earthquakes in Kyushu, Japan

Fig. 7

Non-stationary ETAS model applied to the Kumamoto region (S1 in Fig. 6a). a The red cumulative curve indicates the ETAS model fitted for the entire period. The thick dotted light blue curve indicates the estimated non-stationary ETAS model. b The estimated time-dependent parameters of the non-stationary ETAS model, where the reference parameters are the MLE of the ETAS model. The MLEs are printed in (a). The time axes are on an ordinary scale (left side panel) and a logarithmic scale (right side panel). The vertical dashed line indicates the occurrence time of the M7.3 mainshock. In the M–T plots, the M6.4 and M7.3 events are marked by circles. c The estimates of the K 0 parameters versus the corresponding locations of the aftershocks, where the color table shows the expected number of triggering offspring events of M ≥ 3.0 per square degree per day

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