△T球体异常的三元解释法

Three-Element Interpretation Metbod of Spheroidal △T Magnetic Anomaly

在△Ｔ异常解释课题中，一个新的角度参量─—视磁化特征角的拟定，最大限度地简化了球体磁场表达式。从而才有可能通过特殊解法，给出了球体磁场的极值与拐点公式。作者据此建立了四种不受正常场制约、仅需异常的局部持征曲线即可全面解释三度异常的解释方法。屏障分解、叠加判别、三元迭代的设计，为解释三度体叠加异常给出了简单而易行的途径。

In the process of interpreting △T anomaly,setting up a new angle parameter──apparent mag-netization angle ’simplified the expression formula of the spheroidal magnetic field to the maximum extent,which thereby makes it possible to work out the formula ofthe knee and extremum of spheroidal magnetic fieldthrough special solution,Accordingly,the author has set up four kinds of interpretion method which can give aoverall interpretation to the three dimensional anomalies only accord to part of the characteristic curve of theanomaly in spite of the normal magnetic field.The practice of segmental disposal,overlapping discrimination andthree-element iteration provided simple and easy ways for the interpretation of three-dimensional superimposedanomalies.