河北昌黎地震台大地电场数字化观测资料小波分析  

Wavelet Analysis on Digital Observation data of Earth's Electric Field at Changli,Hebei Seismological Station

作　　者：薛志芳[1] 于春颂[1] 李非[1] 郭建芳[1] 张环曦[1] 温超[2] 任佳[3] 

机构地区：[1]河北省地震局秦皇岛中心地震台,河北秦皇岛066100 [2]河北省地震局,河北石家庄050021 [3]河北省地震局唐山中心地震台,河北唐山063000

出　　处：《山西地震》2012年第4期22-26,40,共6页Earthquake Research in Shanxi

基　　金：河北省地震局青年基金项目(2009-Q07)

摘　　要：基于小波变换理论,提出应用小波分析方法识别、提取昌黎地震台大地电场数字化观测资料不同频率信息的方法。结合实例,讨论小波分析方法在识别与分离不同频率信息、提取趋势异常与短期异常等方面的应用。研究表明,小波变换是大地电场数字化观测资料分析处理的一种新的有效方法。Based on theory of wavelet transformation, the method to identify and extract different frequency information of digital observation data of Earth＇s electric field at Changli Seismological Station by using wavelet analysis is proposed. Using real example, application of wavelet analysis on identifying and departing different frequency information, extracting trend anomaly and short-term anomaly etc. is discussed. The study result indicates that wavelet transformation is a new effective method to analyze digital observation data of Earth＇s electric field.

关 键 词：大地电场 频率 小波变换 

分 类 号：P319.19[天文地球—固体地球物理学]