We present our analysis of the characteristics of the waveforms of earthquakes and quarry blasts that occurred within extreme local-distance (< 25 km) of Csókakő (CSKK) station in the Vértes Hills, Hungary. Our motivation was to determine the linear discrimination line between the earthquake and explosion populations. CSKK is located in the Mór Graben, a seismically relatively active region, and also characterized by significant mining activity. Contamination of earthquake catalogues with anthropogenic events largely complicates seismotectonic interpretation. It is especially true for relatively low seismicity areas, such as Hungary where more than 50% of the recorded seismicity is attributed to anthropogenic events. We tested the effectiveness of the maximum P/S amplitude ratios in various frequency bands. Because most of the quarry blasts are carried out by ripple-fire technology, we also computed spectrograms and examined the spectral ratio between low and high frequencies and the steepness of spectra. We found that earthquakes and quarry blasts are best separated by the linear discrimination that combines the amplitude ratios and the different spectral ratios.

我们对匈牙利 Vértes Hills 的 Csókakő (CSKK) 站极端局部距离（< 25 公里）内发生的地震和采石场爆炸的波形特征进行了分析。我们的动机是确定地震和爆炸人群之间的线性区分线。CSKK 位于 Mór Graben，这是一个地震相对活跃的地区，也有大量的采矿活动。人为事件对地震目录的污染在很大程度上使地震构造解释复杂化。对于地震活动相对较低的地区尤其如此，例如匈牙利，在那里超过 50% 的记录地震活动归因于人为事件。我们测试了各种频段中最大 P/S 幅度比的有效性。由于大多数采石场爆破是通过波纹火技术进行的，我们还计算了频谱图并检查了低频和高频之间的频谱比和频谱的陡峭程度。我们发现地震和采石场爆炸最好通过结合振幅比和不同谱比的线性鉴别来区分。