SEOUL, SOUTH KOREA - JANUARY 06: Ko Yun-hwa (L) The Korea Meteorological Administration Administrator and Yun Won-Tae (R) a Earthquake and Volcano of the Korea Meteorological Administration Director General checks the screen of show a seismic waves from North Korea at the Korea Meteorological Administration center on January 6, 2016 in Seoul, South Korea. North Korea confirmed it has conducted a hydrogen bomb test after South Korea's Metrological Administration detected an 'artificial earthquake' near Punggye-ri, North Korea's main nuclear testing site on January 6, 2015. (Photo by Chung Sung-Jun/Getty Images)