琼北确定性人工爆破与天然地震识别判据

对琼北地区确定性井下人工爆破和天然地震事件波形特征进行梳理,分析人工爆破与天然地震波不同判据特征。结果表明:P波初动方向、振幅比是识别人工爆破和天然地震的2个主要判据;尾波持续时间、S波最大振幅与持续时间比可作为识别人工爆破和天然地震的一般判据;发震时间可根据事件的强度、规律性,并结合其他判据,仅作为识别过程中的参考因素。

Discrimination criterions of doubtless explosions and earthquakes in northern Hainan area

In this paper, we study the waveform characteristics of earthquakes and doubtless underground explosions, analysis different characteristics criterion of explosions and earthquakes in northern Hainan area. The results showed that:P wave initial motion direction, amplitude ratio are two main criterions to identify artificial explosions and natural earthquake; Tail duration, ratio of S wave maximum amplitude and duration can be used as identification criterion of explosions and earthquakes; According to the intensity and regularity of the incident, and combined with other criterion, seismogenic time is reference factor in the process of recognition.