鹤岗地震台地震观测干扰分析

The analysis of observation interference at Hegang Seismic Station

对鹤岗地震台周边环境进行分析,确定干扰源,进行快速傅里叶变换,确定其频率范围。根据爆破、噪声干扰和地震频率的不同,运用Matlab语言,设计相应高通和低通滤波器,对干扰信号进行滤波处理,得出地震波的真实信息,从而提高台站地震资料分析和地震波基础理论研究的准确性。

The surrounding environment of Hegang Seismic Station is analyzed. The sources of interference are determined and their frequency ranges are determined with fast Fourier transforms. Depending on the frequencies of blasting, noise and earthquakes, using Matlab language, the appropriate high-pass and low-pass filter are designed for interference signal filtering process and the real information of seismic wave extraction. Thereby, the veracity of seismic theoretical study and seismic data analysis is improved.