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Table 4 PGA and PGV values at JKM and SNK during the foreshock and main shock

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

Event PGA value (Gal) PGV value (cm/s)
JKM SNK JKM SNK
N–S E–W N–S E–W N–S E–W N–S E–W
Foreshock 659 432 1759 1788 59 43 115 116
Main shock 606 552 1701 1382 71 41 110 75