通海台磁通门地磁记录仪基线值日变化现象

Baseline Value’s Daily Variation Phenomenon of Fluxgate Geomagnetic Recorder in Tonghai Geomagnetic Observatory

通过对通海地磁台2009年到2012年地磁记录日变化准确度标定及基线值数据的精度、稳定性和变化形态的分析,结合观测日所产出地磁总强度数据的F-P检验结果,研究基线值随地磁日变化的变化情况。结果表明,通海台M15(FGE磁通门)磁力仪的ZB、GM4磁通门磁力仪的HB与地磁场的日变化具有一定的相关性,存在日变化现象。

By calibrating the accuracy of diurnal variation of Tonghai Geomagnetic Observatory from 2009 to 2012 and analyzing the accuracy, stability and variation forms of baseline data, this paper studies the changes of baseline value along with the geomagnetic diurnal variations by considering the F-P inspection results of the geomagnetic total intensity data generated on the date of observation. The result shows there is certain correlation between HB of ZB, GM4 fluxgate magnetometer of Tonghai Geomagnetic Observatory M15 magnetometer （ FGE fluxgate ） and the geomagnetic field daily variation. There is daily variation phenomenon.