Fig. 1From: Repeated triggered ruptures on a distributed secondary fault system: an example from the 2016 Kumamoto earthquake, southwest JapanSpatial relationship among the primary Futagawa–Hinagu rupture zones, previously mapped active fault traces, and aftershocks. Locations of the surface ruptures associated with the primary faults are from Kumahara and Research Group of Inter-University (2016). Epicenters of aftershocks following the April 16 after the mainshock (01:25 JST, April 16) are from the Japan Meteorological Agency Catalog. Previously mapped active fault traces are from Nakata and Imaizumi (2002). BSG Beppu-Shimabara grabenBack to article page