Table 1 Earthquakes for which aftershock delay times are examined
From: Earthquakes in Oita triggered by the 2016 M7.3 Kumamoto earthquake
Date | Location | Mainshock | The largest aftershock | The earliest M ≥ 4 aftershock | ||||
|---|---|---|---|---|---|---|---|---|
The earliest M ≥ 5 aftershock | The earliest aftershock | |||||||
M | M | Delay (h) | Distance (km) | M | Delay (h) | Distance (km) | ||
07-01-1995 | Off Iwate pref. | 7.2 | 6.2 | 3.975 | 11.7 | 4.0 | 0.127 | 3.9 |
6.2 | 3.975 | 11.7 | 4.0 | 0.127 | 3.9 | |||
17-01-1995 | Kobe | 7.3 | 5.4 | 1.862 | 42.8 | 4.4 | 0.040 | 4.7 |
5.2 | 0.059 | 10.8 | 4.4 | 0.040 | 4.7 | |||
04-12-1995 | SE off Etorofu | 7.3 | 6.7 | 0.224 | 52.9 | 6.1 | 0.158 | 36.9 |
6.1 | 0.158 | 36.9 | 6.1 | 0.158 | 36.9 | |||
26-03-1997 | NW Kagoshima pref. | 6.6 | 4.9 | 0.121 | 1.7 | 4.9 | 0.121 | 1.7 |
3.1 | 0.057 | 1.7 | ||||||
13-05-1997 | Satsuma, Kyusyu | 6.4 | 5.1 | 17.894 | 4.2 | 5.1 | 17.894 | 4.2 |
5.1 | 17.894 | 4.2 | 2.8 | 0.131 | 8.5 | |||
25-06-1997 | N Yamaguchi pref. | 6.6 | 4.3 | 6.743 | 0.4 | 4.0 | 0.136 | 3.4 |
2.7 | 0.068 | 6.8 | ||||||
04-05-1998 | SE off Ishigaki | 7.7 | 5.3 | 87.640 | 35.0 | 4.4 | 0.456 | 39.8 |
5.3 | 87.640 | 35.0 | 4.4 | 0.456 | 39.8 | |||
03-09-1998 | N Iwate pref. | 6.2 | 4.3 | 0.201 | 5.4 | 4.3 | 0.201 | 5.4 |
1.9 | 0.144 | 2.2 | ||||||
28-01-2000 | SE off Nemuro Peninsula | 7.0 | 4.9 | 232.228 | 59.6 | 4.2 | 0.106 | 5.4 |
3.7 | 0.088 | 5.8 | ||||||
21-07-2000 | Off Ibaraki pref. | 6.4 | 4.1 | 3.836 | 1.6 | 4.1 | 3.836 | 1.6 |
2.6 | 0.103 | 3.5 | ||||||
06-10-2000 | W Totori pref. | 7.3 | 5.6 | 47.794 | 23.5 | 4.1 | 0.058 | 8.4 |
5.6 | 47.794 | 23.5 | 3.9 | 0.045 | 6.1 | |||
24-03-2001 | Geiyo | 6.7 | 5.2 | 38.216 | 2.2 | 4.0 | 0.337 | 13.6 |
5.2 | 38.216 | 2.2 | 2.6 | 0.082 | 10.8 | |||
18-12-2001 | Near Yonagunijima | 7.3 | 5.7 | 236.645 | 14.3 | 4.4 | 0.124 | 11.3 |
5.0 | 0.734 | 10.6 | 4.4 | 0.124 | 11.3 | |||
26-03-2002 | Near Ishigakijima | 7.0 | 5.3 | 3.100 | 22.7 | 5.3 | 3.100 | 22.7 |
5.3 | 3.100 | 22.7 | 2.5 | 0.797 | 25.6 | |||
26-05-2003 | Off Miyagi pref. | 7.1 | 4.9 | 357.992 | 12.3 | 4.1 | 0.070 | 2.9 |
4.1 | 0.070 | 2.9 | ||||||
26-07-2003 | N Miyagi pref. | 6.4 | 5.5 | 9.720 | 10.7 | 4.0 | 0.025 | 4.2 |
5.1 | 3.148 | 5.7 | 4.0 | 0.025 | 4.2 | |||
26-09-2003 | Off Tokachi | 8.0 | 7.1 | 1.298 | 33.1 | 4.3 | 0.162 | 120.5 |
5.1 | 0.255 | 29.9 | 4.3 | 0.162 | 120.5 | |||
05-09-2004 | SE off Kii Peninsula | 7.4 | 6.5 | 32.472 | 16.7 | 4.7 | 0.072 | 21.6 |
5.9 | 5.562 | 22.0 | 4.7 | 0.072 | 21.6 | |||
23-10-2004 | Chuetsu | 6.8 | 6.5 | 0.635 | 5.8 | 5.3 | 0.060 | 2.5 |
5.3 | 0.060 | 2.5 | 5.3 | 0.060 | 2.5 | |||
29-11-2004 | Off Kushiro | 7.1 | 6.9 | 187.716 | 12.2 | 6.0 | 0.074 | 7.6 |
6.0 | 0.074 | 7.6 | 3.7 | 0.071 | 6.5 | |||
20-03-2005 | W off Fukushima pref. | 7.0 | 5.8 | 739.296 | 12.4 | 4.6 | 0.037 | 6.9 |
5.4 | 53.031 | 1.5 | 4.6 | 0.037 | 6.9 | |||
23-07-2005 | NW Chiba pref. | 6.0 | 4.7 | 344.508 | 3.3 | 4.6 | 0.041 | 2.9 |
4.6 | 0.041 | 2.9 | 4.6 | 0.041 | 2.9 | |||
16-08-2005 | Off Miyagi pref. | 7.2 | 4.7 | 640.702 | 8.2 | 4.6 | 0.094 | 11.6 |
4.6 | 0.094 | 11.6 | 3.1 | 0.087 | 30.2 | |||
15-11-2005 | Off Sanriku | 7.2 | 4.8 | 242.824 | 19.9 | 4.5 | 0.091 | 32.1 |
4.5 | 0.091 | 32.1 | ||||||
25-03-2007 | Off Noto Peninsula | 6.9 | 5.3 | 8.496 | 16.5 | 5.1 | 0.021 | 5.1 |
5.1 | 0.021 | 5.1 | 5.1 | 0.021 | 5.1 | |||
16-07-2007 | Off Chuetsu | 6.8 | 5.8 | 5.405 | 6.6 | 4.6 | 0.048 | 3.5 |
5.8 | 5.405 | 6.6 | 4.6 | 0.048 | 3.5 | |||
08-05-2008 | Off Ibaraki pref. | 7.0 | 5.8 | 30.597 | 33.3 | 4.6 | 0.094 | 5.3 |
5.4 | 0.761 | 19.4 | 4.6 | 0.094 | 5.3 | |||
14-06-2008 | Iwate-Miyagi | 7.2 | 5.7 | 0.607 | 24.0 | 4.5 | 0.047 | 8.5 |
5.7 | 0.607 | 24.0 | 4.5 | 0.047 | 8.5 | |||
24-07-2008 | C Iwate pref. | 6.8 | 4.8 | 11.026 | 15.8 | 4.8 | 11.026 | 15.8 |
2.7 | 0.234 | 2.9 | ||||||
11-09-2008 | Off Tokachi | 7.1 | 5.7 | 0.199 | 5.8 | 5.7 | 0.199 | 5.8 |
5.7 | 0.199 | 5.8 | 5.7 | 0.199 | 5.8 | |||
11-08-2009 | Suruga Bay | 6.5 | 4.5 | 61.066 | 10.1 | 4.0 | 1.102 | 14.1 |
3.1 | 0.081 | 3.7 | ||||||
27-02-2010 | Near Okinawa-honto | 7.2 | 5.4 | 15.807 | 0.4 | 4.0 | 0.242 | 12.1 |
5.1 | 4.288 | 4.1 | 3.1 | 0.151 | 11.1 | |||
22-12-2010 | Near Chichijima | 7.8 | 6.6 | 28.502 | 27.4 | 4.7 | 0.165 | 63.4 |
5.4 | 0.364 | 57.2 | 4.7 | 0.165 | 63.4 | |||
09-03-2011 | Off Tohoku | 7.3 | 6.8 | 18.646 | 26.9 | 4.6 | 0.148 | 27.0 |
6.2 | 0.199 | 10.30 | 4.6 | 0.148 | 27.0 | |||
11-03-2011 | Off Tohoku | 9.0 | 7.6 | 0.488 | 262.4 | 6.8 | 0.084 | 103.8 |
6.8 | 0.084 | 103.8 | 6.8 | 0.084 | 103.8 | |||
12-03-2011 | N Nagano pref. | 6.7 | 5.9 | 0.544 | 4.7 | 4.1 | 0.073 | 7.3 |
5.9 | 0.544 | 4.7 | 3.6 | 0.033 | 7.6 | |||
15-03-2011 | E Shizuoka pref. | 6.4 | 4.2 | 0.140 | 4.8 | 4.1 | 0.060 | 4.2 |
3.2 | 0.035 | 3.0 | ||||||
07-04-2011 | Off Miyagi pref. | 7.2 | 5.4 | 43.160 | 10.4 | 4.5 | 0.066 | 19.1 |
5.4 | 43.160 | 10.4 | 4.5 | 0.066 | 19.1 | |||
11-04-2011 | Fukushima Hamadori | 7.0 | 6.4 | 20.858 | 12.1 | 4.8 | 0.019 | 10.4 |
5.7 | 0.027 | 7.1 | 4.8 | 0.019 | 10.4 | |||
07-12-2012 | Off Sanriku | 7.3 | 6.6 | 0.211 | 11.1 | 4.1 | 0.183 | 30.2 |
6.6 | 0.211 | 11.14 | 3.3 | 0.170 | 32.5 | |||
13-04-2013 | Near Awajishima | 6.3 | 3.9 | 0.137 | 2.0 | |||
2.2 | 0.046 | 2.5 | ||||||
22-11-2014 | N Nagano pref. | 6.7 | 4.5 | 0.492 | 9.8 | 4.5 | 0.492 | 9.8 |
3.4 | 0.034 | 5.0 | ||||||
14-11-2015 | W off Satsuma Peninsula | 7.1 | 5.9 | 22.480 | 44.6 | 5.2 | 0.431 | 9.8 |
5.2 | 0.431 | 9.8 | 3.5 | 0.157 | 37.2 | |||
14-04-2016 | Kumamoto | 6.5 | 6.4 | 2.620 | 5.4 | 5.8 | 0.684 | 5.4 |
5.8 | 0.684 | 5.4 | 4.1 | 0.027 | 9.2 | |||
16-04-2016 | Kumamoto | 7.3 | 5.9 | 0.347 | 17.5 | 5.7 | 0.009 | 79.8 |
5.7 | 0.009 | 79.8 | 5.7 | 0.009 | 79.8 | |||