江苏地区天然地震与人工爆破识别研究

选取江苏数字地震台网记录的部分天然地震与人工爆破波形数据,通过波形对比分析、震幅比以及频谱等方面的对比发现两者之间不同之处。把这些不同的方法应用到数字地震台网实际工作中,能够快速有效地分辨出天然地震和人工爆破,为今后震相的识别提供可靠依据。

Recognition Study on Earthquakes and Explosions in Jiangsu Area

The crux of rapid reports of earthquakes is to establish three factors of the event as soon as possible.Seismic phase analysis is the basic work of earthquake monitoring, yet all types of seismic phase demand correct interpretation to determine the earthquake epicenter within the network.Summarizing rapid treatment methods can improve seismic phase analysis and the speed of issuing the rapid report.The present situation of rapid reports of earthquakes in Jiangsu province is analyzed from the viewpoint of both science and society, with recognition of its development.On this basis and using waveform data recorded by the Jiangsu digital seismic network, we studied the difference between natural earthquakes and explosions by contrasted comparative analysis of the waveform, amplitude, frequency spectrum, and other aspects, and found a difference between earthquakes and explosions, both in Jiangsu and adjacent areas.These methods, applied to digital seismograph network practice, can quickly and effectively differentiate natural events from artificial explosions.As a quick distinguishing method, it represents a swift and proficient application during major earthquakes, which provides a reliable basis for the identification of future phases.