Japan Meteorological Agency's earthquake and tsunami observations division director Matsumori points...
Japan Meteorological Agency's earthquake and tsunami observations division director Toshiyuki Matsumori points at graphs of ground motion waveform data observed in Japan during a news conference at the Japan Meteorological Agency in Tokyo, Japan, September 3, 2017, following the earthquake felt in North Korea and believed to be a nuclear test. REUTERS/Toru Hanai