Earth, Planets and Space

Table 6 Stress field parameters for the 2003 northern Miyagi earthquake

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

Area	Michael’s method				Slip instability method
Area	σ1 azimuth plunge	σ2 azimuth plunge	σ3 azimuth plunge	φ min best max	σ1 azimuth plunge	σ2 azimuth plunge	σ3 azimuth plunge	φ min best max
11–Area All–I	84	174	− 8	0.48 0.79 0.98	276	185	50	0.57 0.64 0.72
11–Area All–I	0	4	86	0.48 0.79 0.98	6	6	82	0.57 0.64 0.72
11–Area All–II	38	129	− 60	0.06 0.64 0.99	208	115	307	0.24 0.45 0.74
11–Area All–II	3	21	69	0.06 0.64 0.99	5	26	64	0.24 0.45 0.74
11–Area All–All	7	165	− 22	0.55 0.85 0.99	272	182	17	0.63 0.72 0.78
11–Area All–All	1	7	83	0.55 0.85 0.99	1	5	84	0.63 0.72 0.78
11–North	68	158	− 23	0.09 0.77 0.98	225	133	7	0.40 0.47 0.77
11–North	0	17	73	0.09 0.77 0.98	13	9	74	0.40 0.47 0.77
11–Middle	− 98	172	25	0.3 0.78 0.99	278	187	55	0.39 0.55 0.77
11–Middle	4	6	83	0.3 0.78 0.99	8	8	79	0.39 0.55 0.77
11–South	99	8	− 137	0.29 0.67 1.00	102	12	230	0.52 0.67 0.81
11–South	5	7	81	0.29 0.67 1.00	3	4	85	0.52 0.67 0.81

The number and letter codes in the Area column correspond to the subareas identified in Figs. 5 and 11

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