摘要
本文总结了1986年11月15日台湾花莲海域地震及其强余震前电磁辐射的前兆特征。所用的仪器为DDC-2型电子补偿仪、XWX-2042电位差计,记录极距为100m的两埋地电极间所接收到的电磁辐射信息,震前异常波形最大幅度可达187.5mv,为正常背景的十数倍,频谱较宽(0.005—5Hz)。这种特征对认识发生在太平洋板块与亚欧板块上的地震有一定意义。
This paper generalizes the precusor characteristics of the electromagnetic emis- sions prior to the main earthquake and its strong aftershocks occurred in offshore of Hualian of Taiwan on Nov.15,1986.The electromagnetic emission is recorded with DDC-2 type electronic compensator and XWX-2042 potentiometer,the po- lar distance of which is 100m,maximum anomalous amplitude is 187.5mv that is ten times as big as normal background value.The spectrum of anomalous signals is wider(0.005—5Hz).The above characteristics of electromagnetic emission signals have some significances for the study of the earthquakes occurred in the Pacific plate and Eurasian plate.
出处
《地震学刊》
CSCD
1992年第4期51-54,共4页
Journal of Seismology
关键词
台湾
强余震
电磁辐射
地震
震级
Taiwan
earthquake
strong aftershock
electromagnetic emission
