嘉峪关地震台磁通门磁力仪记录准确度分析  

Accuracy analysis on fluxgate magnetometer records at Jiayuguan Seismic Station

作　　者：董海龙 杨冬梅[2] 张素琴[2] 李西京 

机构地区：[1]嘉峪关中心地震台,中国甘肃735100 [2]中国地震局地球物理研究所,中国北京100081 [3]乾陵地震台,中国陕西713300

出　　处：《地震地磁观测与研究》2016年第1期82-85,共4页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局兰州地震研究所地震科技发展基金青年基金项目(2014Q01)资助

摘　　要：通过日变化记录准确度标定的基线值和同台多套仪器记录的分均值资料,应用差值分析方法,结合仪器定向实验,对磁通门磁力仪记录准确度进行研究。分析发现,磁通门磁力仪GM4(6)的H分量和GM4(8)的Z分量记录的地磁场变化准确度存在偏差,定向实验发现,仪器3个磁通门传感器线圈正交度存在误差,是引起磁通门磁力仪记录准确度偏差大的主要原因。With the baseline values of diurnal change records and the mean value of multiple sets of equipment on same station, using difference analysis method, combining the orientation experimental instrument of instrument, the recording accuracy of fluxgate magnetometer is studied. It is found that there are accuracy deviations in diurnal variation accuracy of the calibration results of H component of f luxgate magnetometer GM4（6） and Z component of GM4（8）. It also is found by orientation experiment that the orthogonal error of three fluxgate sensor coils is main reason of the large recording deviation of the fluxgate magnetometer.

关 键 词：日变化 准确度 基线值 分均值 定向 

分 类 号：P315.721[天文地球—地震学]