From: Local site effects in Kumamoto City revealed by the 2016 Kumamoto earthquake
Code | Lat. (N) | Long. (E) | Start (JST) | End (JST) | Geology | Vs30 (m/s) | |
---|---|---|---|---|---|---|---|
Wald and Allen (2007) | J-SHIS | ||||||
KR01 | 32.77614 | 130.68556 | 2016/04/16 02PM | 2016/05/19 00PM | Alluvium | 240–300 | 155.4 |
KR02 | 32.78184 | 130.68575 | 2016/04/15 06PM | 2016/05/19 02PM | Alluvium | 490–620 | 271.0 |
KR03 | 32.78511 | 130.68549 | 2016/04/16 02PM | 2016/04/21 11AM | Alluvium | 490–620 | 278.7 |
KR04 | 32.78787 | 130.68690 | 2016/04/15 07PM | 2016/05/19 03PM | Alluvium | 490–629 | 298.2 |
KR05 | 32.80654 | 130.69441 | 2016/04/16 01PM | 2016/05/19 01PM | Alluvium | 360–490 | 235.8 |
KR06 | 32.83141 | 130.69463 | 2016/04/16 00PM | 2016/05/19 01PM | Pyroclastic flow deposits | 620–760 | 405.6 |
KU.KMP1 | 32.81980 | 130.62270 | Permanent station | Early pleistocene products (Ko-kinbo volcanic rocks) | 760 | 510.4 |
Epicentral distance (km) | Maximum amplitude 2016/04/18 20:41 (JST) Mj5.8 | Site amplification factors using weak motion data | |||||||
---|---|---|---|---|---|---|---|---|---|
2016/04/16 (JST) Mj7.3 | 2016/04/18 20:41 (JST) Mj5.8 | Horizontal acceleration (cm/s2) | Horizontal velocity (cm/s) | Fundamental frequency (Hz) | Peak amplitude | Amplification over a range of frequencies (s) | |||
0.1–0.2 | 0.2–0.5 | 0.5–1 | 1–2 | ||||||
7.64 | 54.24 | 14.69 | 1.24 | 1.17 | 2.96 | 1.40 | 1.78 | 1.84 | 1.92 |
7.85 | 53.93 | 25.19 | 1.87 | 1.17 | 3.86 | 2.60 | 2.95 | 2.57 | 2.47 |
8.01 | 53.79 | 26.92 | 1.54 | 2.73 | 5.02 | 2.35 | 3.50 | 1.79 | 1.36 |
8.03 | 53.53 | 20.70 | 1.52 | 1.17 | 2.92 | 2.43 | 3.12 | 2.48 | 2.01 |
8.63 | 52.00 | 14.86 | 1.33 | 1.75 | 2.62 | 1.26 | 2.11 | 2.50 | 1.80 |
10.66 | 50.89 | 10.32 | 1.13 | 1.17 | 2.55 | 0.87 | 1.50 | 1.66 | 1.79 |
15.00 | 57.63 | 8.55 | 0.85 | – | – | – | – | – | – |