Fig. 2: Temporal evolution of CI2016 seismicity colored by cluster association (see legend).

The horizontal axis represents the index of the shown earthquakes. a Overview of the temporal subsets. b Magnitude vs. index of individual events (empty circles denote ‘unclustered’); the occurrence times of main events are annotated vertically. c Proportion between the number of earthquakes in each cluster and the total number of earthquakes using a rolling window of the previous 24 h.