Abstract

This article summarizes the observations of the Mikhnevo small-aperture seismic array (SSA) for seismic events within the East European Platform based on analysis of a large number of experimental data. A method for recognizing earthquakes and short-lived group blasts, which is based on discriminating the nature of slope for the curve of distribution of the ratio between amplitude spectra of P and Lg waves log(A_P/A_Lg) relative to the frequency of oscillation, is proposed. It is shown that the curve has a certain trend, whose slope is different for explosions and earthquakes. A new criterion, that is, the sign of the coefficient in the equation that connects the values of log(A_P/A_Lg) and the frequency, is proposed. A negative trend with the increase in frequency is typical of short shots, while a positive trend is typical of earthquakes. The method has been tested based on the records of 405 industrial explosions and 24 earthquakes, with epicenters located 350–900 km from the Mikhnevo SSA.

中文翻译：

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识别由米赫涅沃小孔径地震阵列在区域距离上记录的东欧平台发生的地震事件的性质

摘要

本文基于对大量实验数据的分析，总结了东欧平台内Mikhnevo小孔径地震阵列（SSA）的地震事件观测结果。一种识别地震和短寿命群发爆炸的方法，该方法基于辨别P和Lg波log振幅谱（A _P / A _Lg）相对于频率的分布曲线的斜率性质。提出了振荡。结果表明，该曲线具有一定的趋势，其爆炸和地震的斜率不同。一个新的准则，即连接log（A _P/ A _Lg）和频率。短时射击的频率呈负趋势，而地震则呈典型的正趋势。该方法已根据405次工业爆炸和24次地震的记录进行了测试，震中位于距Mikhnevo SSA 350-900公里的地方。