Table 1 Source parameters of the earthquakes, whose epicentral locations and source spectra are shown in Fig. 4
Earthquake type (Event code as used in Fig. 4) | Japan Meteorological Agency | F-net (NIED) | This study | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Date and Time (JST) | Long | Lat | Mj | Depth (km) | Mw | Depth (km) | Mw | fc (Hz) | Stress drop (bar) | No. of records | |
Crustal (C1) | 2018/12/05, 21:09 | 141.7003 | 36.3423 | 4.6 | 63 | 4.5 | 14 | 4.49 | 1.758 | 44.90 | 7 |
Crustal (C2) | 2016/08/22, 15:11 | 142.1683 | 38.3822 | 5.3 | 33 | 5 | 26 | 5.06 | 1.172 | 96.25 | 31 |
Crustal (C3) | 2016/11/22, 05:59 | 141.6042 | 37.3547 | 7.4 | 24 | 7 | 11 | 6.64 | 0.122 | 34.73 | 8 |
Interplate (IP1) | 2017/10/12, 15:12 | 142.1407 | 36.6868 | 5.2 | 26 | 5 | 23 | 4.99 | 0.83 | 26.11 | 13 |
Interplate (IP2) | 2020/11/22, 19:05 | 141.1015 | 36.591 | 5.7 | 45 | 5.5 | 44 | 5.42 | 0.684 | 65.23 | 33 |
Interplate (IP3) | 2019/08/04, 19:23 | 141.6328 | 37.7072 | 6.4 | 45 | 6.3 | 47 | 6.18 | 0.317 | 89.45 | 17 |
Intraslab (S1) | 2016/09/20, 08:46 | 142.399 | 39.3158 | 4.7 | 46 | 4.5 | 44 | 4.44 | 3.076 | 204.28 | 13 |
Intraslab (S2) | 2020/04/30, 12:15 | 142.824 | 40.8408 | 5.3 | 34 | 5.2 | 50 | 5.15 | 1.099 | 105.88 | 40 |
Intraslab (S3) | 2021/10/06, 02:46 | 142.2548 | 40.0072 | 5.9 | 56 | 5.7 | 53 | 5.6 | 0.757 | 163.93 | 33 |