蒙城台磁变仪跳动及其原因的初探  

A preliminary study of the reason for jumps on the magnetic variometer's records at Mengcheng Seismic Station

作　　者：刘义高[1] 郑志坤[1] 徐治庭 

机构地区：[1]安徽省地震局,安徽合肥230031

出　　处：《地震学刊》2002年第1期17-21,共5页Journal of Seismology

摘　　要：2001-03-09蒙城地震台地磁磁变仪CB-3(观测仪，备份仪)同时出现三个分量动线的跳动，分析表明蒙城地震台地磁总强度F、 垂直强度Z发生变化。 其原因可能是强电流作用下，地下介质电性变化所致。Jumps appeared on the recording traces of all the three components of the CB-3 type geomagnetic variometers(the observational instrument and standby i nstrument) on march 9，2001. An analysis indicated that variation appeared in the geomagnetic total intensity F and the vertical intensity Z. The variations might be caused by the variations in the electric property of the underground medium due to the action of a strong electric current.

关 键 词：磁变仪 三分量动线跳动 强电流 介质电性变化 地下介质 蒙城台 

分 类 号：P315.62[天文地球—地震学]