Japan earthquake seismic waves arrived seven minutes after 300 km altitude

BEIJING, Nov. 3 (Xinhua) network, according to Japanese news reports, the Japanese government's Information and Communication Kyoto University and other research institutions and published in the composition of the joint investigation team reported that in March this year, the powerful Japanese earthquake seismic waves, in 7 minutes reach a height of 300 km from Earth. Research Fellow, Director of Information and Communication Jin Chuanzhuo also said that a major earthquake triggered a tsunami not only, but also creates ...Japan earthquake seismic waves arrived seven minutes after 300 km altitude