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

Earth, Planets and Space

Table 2 Parameters for the foreshock and the observed earthquake events

	Foreshock	EQ-1	EQ-2	EQ-3
Date (year/month/day)	April 14, 2016	April 15, 2016	April 15, 2016	April 15, 2016
Origin time^a (H:Min:S)	21:26:34.43	18:48:12.70	20:15:13.50	23:17:31.62
Source region^a	NW Kumamoto Pref.	NW Kumamoto Pref.	NW Kumamoto Pref.	NW Kumamoto Pref.
Latitude^a (deg.)	N 32.7417	N 32.7105	N 32.6972	N 32.8598
Longitude^a (deg.)	E 130.8087	E 130.7503	E 130.7417	E 130.8740
Depth^a (km)	11.39	13.44	12.47	7.02
M_J ^a	6.5	3.9	3.8	3.6
M_W ^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 mechanisms^b