【摘要】 选取2001年1月～6月中美合作项目(SMALL)中磁通门磁力仪的数据和同期磁变仪的数据进行对比分析。结果表明,两种仪器记录的日变形态、日变幅、极值及极值时间具有较好的一致性,说明该项目中磁通门磁力仪的资料真实可靠。给出的典型地磁脉动事件表明,该仪器可提供精确定时的高质量地磁资料。更多还原

【Abstract】 A contrast analysis is carried out between the digital data produced by fluxgate magnetometer that belong to the SMALL China-America collaborative project and the analog data produced by barometer at Yinchuan observatory. The results show that the diurnal variation shape, the diurnal range, the extremum value and the occurrence time of extremum value of the two recording system have good consistency. This indicates that the data produced by SMALL fluxgate magnetometers is reliable. After resolved the problem of the sensors stability, the magnetometer can be expected to provide long-term continuous and reliable data. The given typical pulsation events show that the SMALL fluxgate magnetometer can provide us with low noise, high resolution, high sampling rate and precise timing data of geomagnetic field.更多还原