节点文献
汶川8.0级大地震前电磁扰动异常变化特征初步研究
Study on anomalous change characters of electromagnetic disturbance before the Wenchuan Ms 8.0 earthquake
【摘要】 利用电磁波扰动理论,研究汶川5·12大地震前,金河、剑阁、二砂3个台站的电磁波异常变化特征。结果表明:①震前3个台站均出现电磁扰动异常,以金河、剑阁地震台显著;②电磁扰动前兆异常在时间进程上有明显的阶段性变化;③随距震中距半径的增大,电磁扰动值逐步衰减。
【Abstract】 Using the theory of electromagnetic disturbance,we analyzed the anomalous characters of electromagnetic disturbance observed at Jinhe,Jiange and Ersha seismic stations during the Wenchuan M_s 8.0 earthquake.The results show that,firstly,the electromagnetic disturbance of three stations all appears anomalous character before earthquake.It is especially obvious at the Jinhe and Jiange seismic stations.Secondly,electromagnetic disturbance anomalies have clear stage change before the earthquake.And thirdly,the farther the distance of epicenter is,the smaller the electromagnetic disturbance intension.
【Key words】 Wenchuan M_S 8. 0 earthquake; electromagnetic disturbance; anomalous character;
- 【文献出处】 地震地磁观测与研究 ,Seismological and Geomagnetic Observation and Research , 编辑部邮箱 ,2010年05期
- 【分类号】P315.72
- 【被引频次】3
- 【下载频次】18