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作为努力发展不易分辨的地下地震事件的现场视察技术的一部分,我们一直致力于余震识别现象学的研究。它可用于核爆炸、化学爆炸、天然地震或其他地震事件的识别。我们已经研究的现象包括:余震的空间分布、主事件发生后作为时间函数的余震数目、余震的大小和波形频率成分。我们的主要结论有:(1)爆炸后两星期余震发生的速率范围为每天1至100个,具体数目依赖于地质条件;(2)集中化学爆炸的余震,如不扩散事件和核爆炸余震无法区别;(3)根据深度、震级和某种情况下地震信号的频率成分,可以对地震和爆炸的余震序列进行划分。
As part of the on-the-spot inspection technique that strives to develop an underground seismic event that is not easily discernible, we have been devoted to the study of aftershock identification phenomenology. It can be used for nuclear explosions, chemical explosions, natural earthquakes or other seismic events. The phenomena that we have studied include the spatial distribution of aftershocks, the number of aftershocks as a function of time after the main event, the magnitude of the aftershocks and the frequency components of the waveforms. Our main conclusions are as follows: (1) The rate of aftershocks occurring two weeks after the explosion ranges from 1 to 100 per day, the exact number depends on the geological conditions; (2) Aftershocks centered on chemical explosions such as non-proliferation events and nuclear aftershocks can not (3) According to the depth, magnitude and the frequency components of the seismic signal under certain conditions, the aftershock sequence of the earthquake and explosion can be divided.