红山地震台地磁GM4仪与FHD-2B仪观测资料对比分析

摘要

通过对2013年红山地震台地磁 GM4磁通门磁力仪与 FHD-2B 质子矢量磁力仪产出的观测资料进行对比，系统分析两套仪器分均值、日均值和基线值的变化趋势，并对仪器背景噪声做相应对比，认为观测数据变化趋势一致，而 GM4仪观测精度较大。%In this paper,according to compare the observed geomagnetic data in 2013 from GM4 fluxgate magnetometer and FHD-2B proton vector magnetometer at Hongshan Seismic Station,we systematically analyze the variation tendency of minute values,daily mean values and baseline values of the two instruments above,and has made the corresponding comparison to background noise of them. We think that the variation tendency of observed data by both instruments are accordant,but GM4 instrument accuracy is greater than the FHD-2B. In addition how to improve the stability,reduce the background noise of instruments are still need further study.