Electromagnetic induction (EMI) techniques are widely used in geophysical surveying. Their success is mainly due to their easy and fast data acquisition, but the effectiveness of data inversion is strongly influenced from the quality of sensed data, resulting from suiting the device configuration to the physical features of the survey site. Forward modelling is an essential tool to optimize this aspect and design a successful surveying campaign. In this paper, a new software tool for forward EMI modelling is introduced. It extends and complements an existing open-source package for EMI data inversion, and includes an interactive graphical user interface. Its use is motivated by a theoretical introduction and demonstrated through a simulated case study. The nonlinear data inversion issue is briefly discussed and the inversion module of the package is extended by a new regularized minimal-norm algorithm.

翻译：电磁感应（EMI）技术广泛应用于地球物理勘探。其成功主要归因于数据采集的便捷性和高效性，但数据反演的有效性强烈依赖于传感数据的质量，而这取决于设备配置是否适应勘探场地的物理特征。正演建模是优化该环节并设计成功勘探战役的关键工具。本文介绍了一种用于正演EMI建模的新型软件工具。该工具扩展并补充了现有的开源EMI数据反演软件包，并包含交互式图形用户界面。其应用价值通过理论介绍进行论证，并通过模拟案例研究加以展示。本文简要讨论了非线性数据反演问题，并通过一种新的正则化最小范数算法扩展了软件包的反演模块。