The experimental geomagnetic observation is hold in the field where the distance from the subway of Shanghai varies differently by utilizing the advanced digital fluxgate magnetometer.

• 摘要用国际上先进的高精度数字化磁通门，在距上海市地铁交通线的不同距离处进行了野外观测，对上海地区地磁观测环境进行了实测试验和分析。