安徽及周边地区小爆破的识别与判据研究

RESEARCH ON IDENTIFICATION OF SMALL EXPLOSIONS IN ANHUI AND ITS SURROUNDING AREA

摘要: 根据安徽测震台网记录的爆破与地震的数字资料,采用波谱分析方法,对该区域记录的小爆破与小震级地震事件计算纵横波拐角频率和卓越周期,试图获得爆破和地震识别的定量指标。对比研究波谱特征,发现爆破与地震的纵横波拐角频率和卓越周期等存在明显差异,为该地区小爆破的识别,提供了新的判据。最后,对爆破与地震其他方面的判据特征进行了总结。

Abstract: Based on digital waveform data on Anhui seismic network, using wave spectrum analysis method, corner frequency and predominant period of P wave and S wave of small explosions and earthquakes records in Anhui and its surrounding area are calculated in order to get the identification quantitative index of explosions and earthquakes.Comparisons show that there is obvious difference between the corner frequency and predominant period of the explosions and that of the earthquakes, which is a new identification criterion of small explosions in Anhui.In addition, other criterion characteristics of explosions and earthquakes are also summarized in this paper.