在W.H.Pelton等(1978年)发表的频谱激电法区分矿物和消除感应耦合的论文中,他们在北美26个矿区进行了大量的露头观测,发现充电率都很高的块状硫化矿和石墨,它们的时间常数有3—4个级次的差别。据此,提出了由稀释系数将视电阻率频谱转换为真谱,求得真时间常数,根据真时间常数之间的差别,对异常源矿物类型进行区分。 稀释系数B_2的表达式为 In a paper published by WH Pelton et al. (1978) in the field of spectrum-induced electrocatalysis to distinguish minerals from inductive coupling, they conducted extensive outcrop observations at 26 North American mines and found massive sulphide ores and graphite with high charge rates , Their time constants have 3-4 levels of difference. Based on this, it is proposed that the apparent resistivity spectrum be converted into a real spectrum by the dilution factor, and the true time constant is obtained. According to the difference between true time constants, the type of the abnormal source minerals is distinguished. The dilution factor B_2 is expressed as