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在对中美合作 SMALL (中国低纬地磁台阵 )项目安装在北京地磁台 (白家疃 )和云南通海地磁台的磁通门磁力仪记录资料与磁变仪模拟记录资料进行了详细的对比分析后 ,得出的结果表明 ,两者的日变形态、日变幅有较好的一致性 ,所选特定事件的变化幅度非常一致 ,说明磁通门磁力仪记录到的变化磁场的资料是真实可靠的。尽管目前磁通门磁力仪的基线值存在温度影响和离散度较大的问题 ,但随温度变化有明显的规律性 ,若能采取改进观测条件和观测方法以及缩短观测时间等措施 ,并对基线值进温度校正 ,磁通门磁力仪完全可以提供长期连续可靠的资料。而其为地震预报 ,空间环境预报 ,为日地物理 ,空间物理和地磁学的研究提供的高精度、高分辨率、连续可靠的数字化变化磁场资料是磁变仪模拟记录无法比拟的。
A detailed comparison was made between the data recorded by the fluxgate magnetometer installed at SMALL (China Low Latitude Geomagnetic Array) project at Beijing’s Geomagnetic Observatory (Baijiatuan) and the Tonghai magnetic station in Yunnan Province and the data recorded by the strain gauge After analysis, the results show that the daily change pattern of the two is in good agreement with the variation range of the selected specific event, indicating that the data of the changing magnetic field recorded by the fluxgate magnetometer is Real and reliable. Although there is a problem of large temperature influence and dispersion on the baseline value of fluxgate magnetometer at present, there are obvious regularities with the temperature variation. If measures such as improving observation conditions and observation methods and shortening observation time can be taken, Value into the temperature correction, fluxgate magnetometer can provide long-term continuous and reliable information. However, it is a high-precision, high-resolution, continuous and reliable digitally-changing magnetic field data for earthquake prediction, space environment prediction, day-space physics, space physics and geomagnetism, which is unmatched by magneto-rheological simulation records.