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Table 2 Comparison between SBJ hypocenters and those of this study

From: Double seismic zone and seismicity in the mantle wedge beneath the Ogasawara Islands identified by an ocean bottom seismometer observation

No. Seismological Bulletin of Japan (1) This study (2) Onset time difference (1)–(2) (s) Location difference (1)–(2) (km) Depth difference (1)–(2) (km)
Origin timea (JST) Lat. (N) (°) Long. (E) (°) Depth (km) Magnitude Flagb Origin timea (JST) Lat. (N) (°) Long. (E) (°) Depth (km) Magnitude
1 2015/07/20 20:53:13.62 27.56 141.37 115 4.3   2015/07/20 20:53:12.31 27.50 141.25 115 5.1 1.31 14 0
2 2015/07/25 12:04:46.21 27.46 142.92 7 3.6 S 2015/07/25 12:04:45.66 27.71 141.78 55 4.1 0.55 129 − 48
3 2015/07/27 01:30:56.34 26.93 142.33 32 2.8 S 2015/07/27 01:30:55.30 26.91 142.07 29 3.4 1.04 29 3
4 2015/07/29 04:39:02.43 26.71 142.44 28 2.0 S 2015/07/29 04:39:02.30 26.69 142.26 26 2.3 0.13 20 2
5 2015/07/31 04:37:07.26 27.29 142.20 97 3.0 S 2015/07/31 04:37:06.03 27.30 141.32 23 3.6 1.23 98 74
6 2015/08/03 10:07:07.93 27.19 140.85 26 3.0 S 2015/08/03 10:07:08.31 27.19 141.24 109 3.0 − 0.38 43 − 83
7 2015/08/17 03:15:10.80 27.16 142.43 76 2.4 S 2015/08/17 03:15:09.14 27.17 141.63 60 3.2 1.66 89 16
8 2015/08/17 05:56:47.02 27.02 142.31 131 2.9 S 2015/08/17 05:56:46.23 27.01 141.33 94 3.4 0.79 109 37
9 2015/09/02 01:39:14.65 27.57 141.72 106 2.9 S 2015/09/02 01:39:13.60 27.48 141.42 91 3.6 1.05 34 15
10 2015/09/05 19:06:22.19 27.70 141.78 83 3.7 S 2015/09/05 19:06:20.56 27.75 141.56 68 4.5 1.64 25 15
11 2015/09/14 12:47:45.24 26.93 141.37 121 4.1   2015/09/14 12:47:43.96 26.75 141.46 126 4.7 1.28 19 − 5
12 2015/09/20 01:39:07.46 27.65 142.63 86 3.2 S 2015/09/20 01:39:05.76 27.75 141.55 68 4.1 1.70 120 18
13 2015/09/22 05:30:44.80 26.76 142.34 16 1.9 S 2015/09/22 05:30:42.90 26.73 142.36 9 2.1 1.90 3 7
14 2015/09/28 08:34:47.75 27.73 142.55 89 3.6 S 2015/09/28 08:34:46.32 27.77 141.41 46 4.3 1.43 127 43
15 2015/09/29 02:36:42.81 27.02 142.37 24 2.4 S 2015/09/29 02:36:41.52 27.01 142.36 21 2.5 1.29 1 3
16 2015/10/02 18:17:21.24 27.79 141.96 86 3.5 S 2015/10/02 18:17:20.68 27.70 141.66 74 4.6 0.56 34 12
17 2015/10/02 23:46:25.35 26.69 142.44 29 3.0 S 2015/10/02 23:46:24.61 26.62 142.20 32 3.1 0.74 27 − 3
  1. aFormat: Year/Month/Day Hour:Minutes:Seconds
  2. bEarthquakes for which the hypocenters were determined with low precision are flagged with an “S”