Skip to main content

Table 2 Parameters for the foreshock and the observed earthquake events

From: Ground motion estimation for the elevated bridges of the Kyushu Shinkansen derailment caused by the foreshock of the 2016 Kumamoto earthquake based on the site-effect substitution method

  Foreshock EQ-1 EQ-2 EQ-3
Date (year/month/day) April 14, 2016 April 15, 2016 April 15, 2016 April 15, 2016
Origin timea (H:Min:S) 21:26:34.43 18:48:12.70 20:15:13.50 23:17:31.62
Source regiona NW Kumamoto Pref. NW Kumamoto Pref. NW Kumamoto Pref. NW Kumamoto Pref.
Latitudea (deg.) N 32.7417 N 32.7105 N 32.6972 N 32.8598
Longitudea (deg.) E 130.8087 E 130.7503 E 130.7417 E 130.8740
Deptha (km) 11.39 13.44 12.47 7.02
MJ a 6.5 3.9 3.8 3.6
MW b 6.1 3.7 3.7 3.8
M0 b (Nm) 1.74E + 18 4.48E + 14 4.25E + 14 5.52E + 14
(strike, dip, rake)b (deg.) (212, 89, 164) (33, 87, 162) (207, 70, 178) (281, 51, 59)
Focal mechanismsb
  1. aAfter JMA
  2. bAfter F-net (www.fnet.bosai.go.jp)