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下面的链接给出了911时,93号航班直接撞击地面的地震波记录:
http://911research.wtc7.net/mirrors/guardian2/wtc/seismic/WTC_PENT_KIM.htm
图5的解释:The seismic signals are relatively weak compared with the background noise level. For instance,at stations MCWV and SDMD, the signal (portion of signals just after Sg) to noise (portion of records just before Pg arrivals) ratios are about 1:1, whereas, at station SSPA the ratio is about2.5:1 and at MVL it is about 2:1 (Figure 5).
也就是说,大型民航客机撞击地面,产生的地震波是微乎其微的。
2014-03-14 23:53
http://911research.wtc7.net/mirrors/guardian2/wtc/seismic/WTC_PENT_KIM.htm
图5的解释:The seismic signals are relatively weak compared with the background noise level. For instance,at stations MCWV and SDMD, the signal (portion of signals just after Sg) to noise (portion of records just before Pg arrivals) ratios are about 1:1, whereas, at station SSPA the ratio is about2.5:1 and at MVL it is about 2:1 (Figure 5).
也就是说,大型民航客机撞击地面,产生的地震波是微乎其微的。
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