Discrimination Between Nuclear Explosions and Earthquakes: An Application of Wigner Distribution     

Shen Ping  Zheng ZhizhenInstitute of Geophysics  SSB  Beijing  ChinaCenter for Seismic Data  Informadon  SSB  Beijing  China 《中国地震研究》1996,(3)

In this paper,the nonstationary theory of Wigner Distribution is used to discriminate between underground nuclear explosions and natural earthquakes.Five underground explosions in Kazakhstan region and seven regional earthquakes in its adjacent areas have been analyzed.The result shows that the transient spectra of underground nuclear explosions are concentrated in the frequency range of 5-10 Hz,while the transient spectra of natural earthquakes are distributed widely from lower frequency to higher frequency.The transient frequency of nuclear explosions shows linearity in the first stage(0相似文献