基于声线法的核爆次声传播模型分析

Analysis on the Model of Nuclear Explosion Infrasound Propagation Based on the Sound Line Method

次声技术是《全面禁止核试验条约》(CTBT)国际监测系统(IMS)规定的4种监测手段之一。由于次声在大气中传播时具有衰减小、传播远的特点,因此在远程大气核爆探测与定位中得到广泛应用。在课题研究中,讨论了基于声线追迹方法的大气次声传播模型,分析了次声传播路径及其计算方法,并对某自然次声事件进行了次声传播路径分析。结果表明,计算结果和实际结果基本一致。

Infrasound technology is one of the four monitoring methods specified by the CTBT international moni -toring system （IMS）.Infrasound is widely applied in the detection and localization of long distance nuclear ex -plosion for its small attenuation ,long propagation distance when propagating in atmosphere .Infrasound propaga-tion model was discussed using sound line tracing method ,and its propagation path and calculation method were analyzed .As a trial of the present method ,the infrasound propagating path of a detected natural event was cal -culated ,and the results obtained demonstrated good consistency with those detected .