3-D dynamic rupture simulations of the 2016 Kumamoto, Japan, earthquake

Earth, Planets and Space

Table 1 Estimated fault parameters and seismic moment of the foreshocks and the main shock

Event	Center position of fault			Length (km)	Width (km)	Strike (°)	Dip (°)	Rake (°)	Seismic moment (Nm)^a
Event	Longitude (°E)	Latitude (°N)	Depth (km)	Length (km)	Width (km)	Strike (°)	Dip (°)	Rake (°)	Seismic moment (Nm)^a
Foreshock 1	130.7700	32.7300	10.0	15.8	8.9	212	60.5	− 164^a	\(1.74 \times 10^{18}\)
Foreshock 2	130.8300	32.7755	9.97	5.1	7.5	45	80.0	− 178^a	\(1.27 \times 10^{17}\)
Foreshock 3	130.7550	32.7007	7.97	14.1	9.1	200	75.0	− 152^a	\(1.06 \times 10^{18}\)
Main shock (Hinagu fault)	130.7725	32.7500	10.0	17.0	21.58	205	68.0	(− 165)^b	\(4.42 \times 10^{19}\)
Main shock (Futagawa fault)	130.9000	32.8700	10.0	20.0	23.1	235	60.0	(− 123)^b

^aThe values were derived from the F-net moment tensor solutions
^bThese values were calculated from the regional stress field. The slip direction of the main shock in dynamic rupture simulations is the same as the shear stress direction determined from the regional stress field, the static stress change due to the foreshocks, and the dynamic stress change during the rupture propagation