首都圈地磁场变化的空间分布与中强地震活动  

Spatial distribution of geomagnetic isoporic lines and moderately strong earthquake activity in Beijing and its neighbouring area

作　　者：李菊珍[1] 张海春[1] 于冬艳[1] 孔来顺 朱石军 熊焰[1] 乔永军[1] 

机构地区：[1]北京市地震局,中国北京100080 [2]平谷地震台,中国北京101204 [3]延庆地震台,中国北京102100

出　　处：《地震地磁观测与研究》2008年第6期1-5,共5页Seismological and Geomagnetic Observation and Research

摘　　要：这里主要分析首都圈及周围地区地磁垂直分量Z等变线变化与该区1～2年尺度中强地震的关系。经过分析得出:正常情况下年变线分布均匀,在首都圈及邻近地区较强地震发生前1～2年内出现等变线密集区域,未来地震就发生在区域的边缘,特别是等变线长轴所指方向的活动构造带上。this article, the relationship between the variation of magnetic ately strong earthquake activity in 1-2 year scale in Beijing and its isoporic lines and moderneighboring area is mainly analyzes. The conclusion is that the distribution of magnetic isoporic lines is homogeneous under the normal condition, while the magnetic isoporic lines become dense about 1-2 years before the moderately strong earthquakes in Beijing and its neighboring area. The earthquakes would occur on the edge of this area, especially the active tectonic zone which pointed by the macroaxis of the magnetic isoporic lines.

关 键 词：地磁等变线 构造活动 地震 趋势预测 

分 类 号：P315.721[天文地球—地震学]