利用IGRF模型计算全张量地磁梯度
钟炀, 管彦武, 石甲强, 肖锋

The calculation method of full tensor geomagnetic gradient based on IGRF model
Yang ZHONG, Yan-Wu GUAN, Jia-Qiang SHI, Feng XIAO
图2 总地磁场B等值线
Fig.2 Contour map of the total geomagnetic field