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Fig. 6 | Earth, Planets and Space

Fig. 6

From: Seismic velocity structure at the southern termination of the 2016 Kumamoto Earthquake rupture, Japan

Fig. 6

Vp/Vs structure and aftershock distribution in the early stage. a T-axes of the various fault types, and Vp/Vs at b 2.5 km, c 5 km, d 7.5 km, e 10 km, and f 12.5 km depth. The hypocenters located within 2.5 km of each depth slice are plotted and labeled according to their occurrence in the earthquake sequence: 1 = from the foreshock to the mainshock; 2 = up to one day after the mainshock; 3 = April 17–June 30, 2016. The locations for 1–3 are based on the JMA unified earthquake catalog. The solid and dashed red lines denote the active faults determined by RGAF (1991) and HERP (2013), respectively. FT Futagawa segment, UT Uto segment, UN north coast of Uto Peninsula segment, TS Takano–Shirahata segment, HN Hinagu segment. The southern termination of the fault rupture, which is estimated during our study, is indicated by the black arrow

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