The transient electromagnetic (TEM) responses measured in areas with highly polarizable media commonly show induced polarization (IP) effects, which poses difficulties to the TEM data interpretation and inversion with conventional methods. When present, the IP effects break the monotony in TEM decay curves and can even cause sign reversals, and lead to the singularity and non-monotony of inversion method. It is therefore important to take the IP effects into account when processing those TEM data. In this paper, a new inversion method is developed to invert TEM data with IP effects. The Cole-Cole model was introduced to the forward modeling solver so that the IP effects can be accurately calculated. The regularization terms were adapted to the objective function and a global optimization method, the particle swarm optimization algorithm, was used to solve the optimization problem, which weakened the singularity and non-monotony of the inversion greatly. Field data were collected in Wulong gold mine where IP effects were detected. The data were inverted using the method developed in this paper, and the inversion results were able to identify the depth extension of NO. 163 ore-bearing quartz veins and their associated fine-grained diorite veins. The global inversion method in this paper primarily solved the inversion problem of IP-affected TEM responses, and recovered the polarization parameters, which can be used as an aid to the geological interpretation.

在具有高度可极化介质的区域中测得的瞬态电磁（TEM）响应通常显示感应极化（IP）效应，这给TEM数据解释和常规方法的反演带来了困难。当存在IP效应时，IP效应会破坏TEM衰减曲线中的单调性，甚至可能导致符号反转，并导致反演方法的奇异性和非单调性。因此，在处理那些TEM数据时，必须考虑IP效应，这一点很重要。本文提出了一种新的反演方法，可以对具有IP效应的TEM数据进行反演。将Cole-Cole模型引入到正向建模求解器中，以便可以准确计算IP效果。正则化项适用于目标函数和全局优化方法，粒子群优化算法，用来解决优化问题，极大地削弱了反演的奇异性和非单调性。在发现IP效应的武隆金矿中收集了现场数据。使用本文开发的方法对数据进行反演，反演结果能够识别NO的深度扩展。163个含矿石英脉及其相关的细粒闪长岩脉。本文采用的全局反演方法主要解决了IP对TEM响应的反演问题，并恢复了极化参数，可作为地质解释的辅助手段。使用本文开发的方法对数据进行反演，反演结果能够识别NO的深度扩展。163个含矿石英脉及其相关的细粒闪长岩脉。本文采用的全局反演方法主要解决了IP对TEM响应的反演问题，并恢复了极化参数，可作为地质解释的辅助手段。使用本文开发的方法对数据进行反演，反演结果能够识别NO的深度扩展。163个含矿石英脉及其相关的细粒闪长岩脉。本文采用的全局反演方法主要解决了IP对TEM响应的反演问题，并恢复了极化参数，可作为地质解释的辅助手段。