Fig. 3
The 2016 Kumamoto earthquake sequence. a Time evolution of foreshock (blue dots) distribution. The left panel shows the first 30 min after the MJMA 6.5 foreshock (April 14, 2016, at 12:26 UTC). The center panel shows foreshocks from 30 min after the MJMA 6.5 foreshock to the MJMA 6.4 foreshock (April 14, 2016, at 15:03 UTC). The right panel shows foreshocks from the MJMA 6.4 foreshock to the mainshock. White, red, and yellow stars represent the epicenters for the MJMA 6.5 foreshock, the MJMA 6.4 foreshock, and the mainshock, respectively, determined by the JMA. The transparent black lines represent the Hinagu and Futagawa fault traces. b Snapshots of the inverted slip rate of the mainshock. The left top time is a time of each snapshot from the origin time. The yellow star indicates the epicenter determined by the JMA. c Red dots represent aftershocks occurring in the first 3 days after the mainshock as determined by the JMA. The transparent black lines represent the Hinagu and the Futagawa fault traces. Topography underlying all the panels of Fig. 3 is derived from NASA’s Shuttle Radar Topography Mission (SRTM; Farr et al. 2007). The blank triangles on all the panels of Fig. 3 represent the active volcanoes in the region