Stress field in northeastern Japan and its relationship with faults of recent earthquakes

Earth, Planets and Space

Table 3 Slip tendency (ST) for 1993 Hokkaido Nansei-Oki earthquake calculated using fault models

Events	Fault model		Dip direction	Stress field	\(Ts\) best	\(Ts\) error
Hokkaido Nansei-Oki earthquake	Tanioka et al. (1995)	A	East	2—All	0.947	0.943 < \(Ts\) < 0.960
		B, C	East		0.943	0.943 < \(Ts\) < 0.961
		D, E	West		0.513	0.497 < \(Ts\) < 0.562
		A	East	2—North	0.815	0.787 < \(Ts\) < 0.996
		B, C	East		0.935	0.933 < \(Ts\) < 0.953
		D, E	West		0.586	0.525 < \(Ts\) < 0.821
		A	East	2—South	0.955	0.953 < \(Ts\) < 0.964
		B, C	East		0.929	0.929 < \(Ts\) < 0.957
		D, E	West		0.507	0.497 < \(Ts\) < 0.537

ST value (\(Ts)\) error is calculated using the uncertainty of each stress ratio. Bold numbers indicate ST best values of \(Ts>0.7\). The number and letter codes in the stress field correspond to the subareas identified in Fig. 5