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本文利用第四代国际地磁参考场(IGRF 1985)计算出我国地磁台的理论年均值,并指出在计算地球表面或某一高度处的地磁场值时,应当把地球当作一个椭球体,而不能简单地当作一个圆球体。
In this paper, the fourth generation of International Geomagnetic Reference Field (IGRF 1985) is used to calculate the theoretical annual mean value of geomagnetic stations in China. It is pointed out that Earth should be regarded as an ellipsoid when calculating the value of geomagnetic field at the surface of the Earth or at a certain altitude Can not simply be treated as a sphere.