Ko Yun-hwa (L), Administrator of Korea Meteorological Administration, points at where seismic waves observed in South Korea came from, during a media briefing at Korea Meteorological Administration in Seoul, South Korea, January 6, 2016. REUTERS/Kim Hong-Ji

Ko Yun-hwa (L), Administrator of Korea Meteorological Administration, points at where seismic waves observed in South Korea came from, during a media briefing at Korea Meteorological Administration in Seoul, South Korea, January 6, 2016. REUTERS/Kim Hong-Ji

Ko Yun-hwa (L), Administrator of Korea Meteorological Administration, points at where seismic waves observed in South Korea came from, during a media briefing at Korea Meteorological Administration in Seoul, South Korea, January 6, 2016. REUTERS/Kim Hong-Ji

January 13, 2016 8:53 PM (UTC+8)