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Table 3 Source parameters of long-period ground motions

From: Long-period ground motion simulation using centroid moment tensor inversion solutions based on the regional three-dimensional model in the Kanto region, Japan

  Lon. [°] Lat.[°] Depth [km] Mrr Mθθ Mϕϕ M M Mϕθ Exp. Dur. [s]
a 141.4 37.2 44 3.365 − 0.118 − 1.848 1.191 3.131 − 0.649 22 1
b 141.0 35.6 32 2.659 0.623 2.077 − 0.707 3.068 − 1.249 22 1
A 141.9 37.6 56 2.540 − 0.520 − 2.144 1.004 2.352 − 1.102 25 5
B 141.1 36.0 36 1.128 − 0.696 − 0.711 0.055 2.408 − 0.210 24 3
C 141.8 36.4 8 − 1.402 − 0.082 0.713 − 0.239 1.316 − 0.043 24 2
  1. Origin times of events a, b, A, B, and C were 10:02:45 JST on November 17, 2017, 19:56:05 JST on August 6, 2018, 19:23:01 JST on August 4, 2019, 03:23:54 JST on January 3, 2020, and 20:19:56 JST on February 6, 2020, respectively. Source durations were assumed using the empirical relationship between seismic moments and durations (Kanamori and Brodsky 2004)