摘要
崇州地震台安装GM4型磁通门磁力仪,观测数据变化中不时出现突跳、台阶等畸变现象,通过对记录曲线典型畸变形态分析,发现是围墙外车辆对GM4型磁力仪的干扰、远处大型工程机械进出或施工时产生的干扰和高压输电线的干扰。
The GM4 fluxgate magnetometer is the main geomagnetism equipment installed in Chengdu Seismic Fiducial Station in the ＂Tenth-five year project＂. The interferences come mostly from iron magnetic materials and power transmission lines. According to the given interference types,we analyze the distortion shown in observation data and keep the observation as consistent,reliable and accurate as possible.
作者
李国超
钟李彬
李雪浩
LI Guochao,ZHONG Libin,LI Xuehao(Chengdu Seismic Fiducial Station, Sichuan Earthquake Agency, Sichuan Chengdu 611730, Chin)
出处
《四川地震》
2018年第2期19-22,34,共5页
Earthquake Research in Sichuan
关键词
GM4磁通门磁力仪
铁磁性物质
电磁类型
干扰
GM4 fluxgate magnetometer
iron magnetic material
electromagnetic types
interference
