Fig. 4

Comparison of the duration and timing of SSEs in our study with those in the NIED catalog in each segment. Blue vertical bars show the number of days categorized into the release period when the tremor energy threshold is changed. Pink vertical bars show the number of days in which the SSE periods in this study correspond to those in the NIED catalog. Red horizontal lines show the total durations of SSEs in the NIED catalog. a Comparison in segment I. b Same as a, but in segment II. c Same as a, but in segment III. d Same as a, but in segment IV. e Same as a, but in segment V