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Table 1 List of temporary seismic stations and one permanent seismic station with site information from surficial geological data and seismic data

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
  1. Epicentral distances and the maximum amplitudes at the seismic stations for the 2016 Kumamoto earthquake and an aftershock (Mj 5.8) of that earthquake are indicated