小波分析在天然地震初震中的应用研究

The Application of Wavelet Analysis to Natural Preliminary Earthquakes

地震灾害给人类带来了很大的灾难,为了提高地震速报的速度和震后应急赢得宝贵时间,必须对地震波进行初震识别,确定地震波的初至位置及初至时间。地震波初震识别方法很多,本文主要研究小波分析在初震识别中的应用。通过该方法对模拟信号和实际天然地震信号进行识别,对结果进行分析讨论,并表明该方法的有效性和准确性。

Earthquake brings great harm to human beings. In order to improve the speed of earthquake report and obtain precious time for post-earthquake emergency, people must identify the preliminary earthquake based on seismic wave to locate the position and infer the beginning time. There are many methods identifying the preliminary earthquake, this thesis mainly introduces the application of wavelet analysis in identifying the preliminary earthquake. Based on the analysis of analog signals, the actual seismic signals and the result, this method is proved to be effective and accurate.