A seismograph installed nearby epicenter of this earthquake measured peak ground acceleration of 0.58 g , equivalent to mag . 7.4 ; Due to Pohang City 's poor subsoil area , seismic wave amplified while passing through , making the damage somewhat heavier than 2016 Gyeongju earthquake . 0.58 g of PGA is about equivalent to MMI Int . VIII to IX
2016 Gyeongju earthquake
2016 Gyeongju earthquake
2017 Pohang earthquake