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本文根据在柱座标系中近地面空间磁场解的普遍形式,建立了区分地磁局部异常源场理论的基本公式。与已有的工作比较主要不同点是: (1)与普拉爱斯等人的结论相反,从理论上普遍地证明了:不可能直接由水平面内单一分量的观测结果,区分垂直分量的内外源场; (2)证明了全部源场区分的理论公式是收敛和唯一的,保证了理论结果的完整性; (3)普拉爱斯和韦弗的理论方法对于三维和二维问题,必须分别独立地建立,而本文所建立的源场区分的基本公式,对于二维问题同样适用,可由此直接过渡到二维场的结果; (4)给出了一种由单一水平分量观测结果,区分垂直分量源场的间接近似方法。这在实际应用中是重要的。
In this paper, based on the universal form of the magnetic field solution in the near-surface space in the coordinate system of the column, a basic formula for distinguishing the local field theory of geomagnetic anomaly is established. The main differences from the existing work are as follows: (1) Contrary to the conclusion of Praha et al., It is generally proved theoretically that it is impossible to directly distinguish the inside and outside of the vertical component from the observation of the single component in the horizontal plane (2) the theoretical formula that proves that all the source fields are differentiated is convergent and unique, which guarantees the integrity of the theoretical results. (3) The theoretical method of Praxair and Weaver For three-dimensional and two-dimensional problems, Respectively, and the basic formula for distinguishing the source field established in this paper is also applicable to the two-dimensional problem, so that the result of the two-dimensional field can be directly transited to it. (4) Indirect approximation to distinguish source component of vertical component. This is important in practice.