摘要
通过小波变换分析了泾阳地震台、乾陵地震台和周至地震台的Z时均值资料,结果显示经小波变换后的Z“日幅变差”震前3个月内存在较明显的异常变化,可能反映了泾阳地震的震磁效应。
The hourly data of the Jingyang and Qianling and Zhouzhi observatories had been analyzed using the wavelet transform technique.The results indicate that the amplitudes of the diurnal variations,which are obtained from the wavelet transform,for the Jingyang Observatory appear anomaly before and after earthquake occurrence.
出处
《地震地磁观测与研究》
2005年第2期38-42,共5页
Seismological and Geomagnetic Observation and Research
基金
中国地震局"三结合"项目的资助
关键词
小波变换
地磁日变化
震磁效应
泾阳地震
wavelet transform,geomagnetic diurnal variations,seismic-magnetic effect,the Jingyang earthquake
