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

机译：核爆炸与地震之间的区别：威格纳分布的一种应用

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摘要

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 < 1 < 0.75 s) and its initial frequency is negative. The transient frequency of natural earthquakes rapidly changes in a jumping form and its initial frequency alternates between being positive and negative. The obtained results show that the method is more effective than previous ones in discriminating between underground nuclear explosions and earthquakes. This paper also gives a preliminary explanation of the discrepancy in the transient spectrum between underground nuclear explosions and earthquakes.
机译：在本文中，使用维格纳分布的非平稳理论来区分地下核爆炸和自然地震。哈萨克斯坦地区发生了五次地下爆炸，其邻近地区发生了七次区域地震。结果表明，地下核爆炸的瞬变谱集中在5-10 Hz的频率范围内，而自然地震的瞬变谱则分布范围从低频到高频。核爆炸的瞬变频率在第一阶段（0 <1 <0.75 s）呈线性，其初始频率为负。自然地震的瞬时频率以跳跃形式快速变化，并且其初始频率在正负之间交替。所得结果表明，该方法在区分地下核爆炸和地震方面比以前的方法更为有效。本文还初步解释了地下核爆炸与地震之间的瞬态频谱差异。

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