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众所周知,对于如磁铁矿体这样的强磁性介质(κ>0.05CGSM),磁体自身的退磁作用是很大而不可忽视的。现有的很多磁异常正演计算法本身不包含磁体自身退磁的计算。在使用这些计算方法之前必须先把磁性体近似看作退磁系数已知的椭球类形体进行
It is well known that for ferromagnetic media such as magnetite ore bodies (κ> 0.05 CGSM), the demagnetization of the magnet itself is large and can not be ignored. Many of the existing magnetic anomaly forward calculation method does not include the calculation of the magnet demagnetization itself. Before using these calculations, we must first consider the magnetic body as an ellipsoidal body of known demagnetization coefficient