大地测量与地球动力学2011，Vol.31Issue(6)：32-38,7.
玉树7.1级地震前后电磁辐射小波变换分析
WAVELET TRANSFORM OF ELETROMAGNETIC RADIATION BEFORE AND AFTER YUSHU Ms7.1 EARTHQUAKE
摘要
Abstract
By use of the wavelet analysis, the electromagnetic radiation data of the Yushu earthquake magnitude 7. 1 in Qinghai province near Dujiangyan, Jiange, Jiangyou stations in Sichuan and Ersha station in Zhengzhou before and after the event, were studied in the different scales of wavelet detail decomposition and then it is found that there are anomalous information before the earthquake, and had interpretated preliminarily. The results show that, the first, the details of the wavelet decomposition show abnormal electromagnetic wave signal of low frequency before the earthquake portion of the earlier time; epicenter close to the station, the information that appears anomay in high frequency band; a little far from the epicenter of the station, the anomay in low frequency band information. The second, along with the epicentral distance increases, the smaller the radiation energy, the anomalies appear later.关键词
玉树地震/电磁辐射/小波变换/异常特征/震中距Key words
Yushu earthquake/electromagnetic radiation/wavelet transform/anomaly feature/ epicentral distance分类
天文与地球科学引用本文复制引用
张建国,刘晓灿,马新欣,焦立果..玉树7.1级地震前后电磁辐射小波变换分析[J].大地测量与地球动力学,2011,31(6):32-38,7.基金项目
河北省地震局重点项目"河北地区电磁场动态演化特征研究" （）
中央级公益性科研院所基本科研业务专项(059217,DQJB10B25) （059217,DQJB10B25）
