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Table 1 Summary of fault model setting in waveform inversion analysis

From: Source rupture process of the 2018 Hokkaido Eastern Iburi earthquake deduced from strong-motion data considering seismic wave propagation in three-dimensional velocity structure

Origin time (JST)a 2018/09/06 03:07:59.33
Hypocentera 42.6908°N, 142.0067°E, 37.04 km
Fault segment South Central North
Strike/dip 10°/70° 355°/70° 5°/70°
Rake angle variation 90° ± 45° 90° ± 45° 90° ± 45°
Length 12 km 9 km 9 km
Width 24 km 24 km 24 km
Top depth 18.7 km 18.7 km 18.7 km
Bottom depth 41.3 km 41.3 km 41.3 km
Subfault size 3 km × 3 km
Number of subfaults 32 24 24
Number of time-windows 4
Duration/time-shift of time-window 2.0 s/1.0 s
  1. aThe origin time and hypocenter were taken from the JMA unified earthquake catalog