地电异常信号的频域分析

The Frequency Domain Analysis of Abnormal Seismic Electrical Signals

以北京工业大学地震研究所南北方向地电脉冲仪接收到的典型地电异常信号为研究对象．应用傅里叶和小波分析理论对两种地电异常信号进行频域分析,找出地电信号的频域特性及频率范围．根据分析结果可知上述地电异常信号属有用的地波信号．

This article investigated typical abnormal seismic electrical signals, which were receivect by seismic electrical pulse instrument located in Beijing University of technology, and the carried out frequency analysis by theory of Fourier Transform and Wavelet Transform, finally found out the frequency characteristics and the frequency range. The results show that the above mentioned abnormal seismic electrical signals are useful ground-wave signals.