垂直磁异常(vertical magnetic anomaly):地磁场垂直分量的异常称为垂直磁异常,用符号zo表示。它是总磁异常强度To的垂直分量。例如用悬丝式或饱和式磁通f J磁力仪进行地面磁法勘探时测定的就是垂直磁异常。根据垂直磁异常的特点可以推断磁性地质体的规模、位置、产状和磁化特点,解决相应的地质问题。
本文给出了由实测重、磁异常计算上半空间一阶垂直导数的一种方法。
A method for computing first vertical derivatives in the upper half-space from observed gravity and magnetic anomaly data is given in this paper.
基于这一原理,本文就二度岩脉、接触带、垂直断层磁异常的反问题导出其表达式。
Based on this principle, the new function expressions of 2-d anomalies due to sloping thin dikes, geologic contact and vertical fault have been deduced, respectively.
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