喷发还产生了环绕地球7次的大气冲击波，冲击波产生的噪音5000千米外都能听到。
It also generated an atmospheric shock wave that travelled around the Earth seven times, and noise from the blast was heard up to 5, 000 km away.
科学家门把地震运动划分为四种速度从3千米每秒到15千米每秒不等的四种诊断性波。
Scientists categorize seismic movements into four types of diagnostic waves that travel at speeds ranging from 3 to 15 kilometers (1.9 to 9.4 miles) per second.
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