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首次引用古地磁学中虚地磁极（ＶＧＰ）的计算方法来研究现代地磁场的变化规律。通过对中国地区６个台站资料的分析以及对全球３９个台站资料的分析结果可以得出结论：利用地磁场角度分量来研究长期变化是可行的；ＶＧＰ的漂移情况正好表明非偶极子磁场的存在与随时间的变化；ＶＧＰ漂移方向的全球分布与地磁长期变化场的有关分量等值图之间的一致性较好。
For the first time, the calculation method of virtual geomagnetic pole (VGP) in paleomagnetism is used to study the variation law of modern geomagnetic field. By analyzing the data of 6 stations in China and analyzing the data of 39 stations in the world, it can be concluded that it is feasible to study the long-term changes by using the geomagnetic field components. The VGP drifts just show that non-dipoles The existence of the magnetic field and the change with time; the consistency between the global distribution of the VGP drift direction and the isogram of the component of the long-term change field of geomagnetic is good.