A three-dimensional (3D) inversion of the components of magnetotelluric impedance matrix is used for constructing a geoelectric model of the Altai-Sayan region. Based on the model and empirical data, the possibilities of three-dimensional inversion of all the four components of the impedance matrix and its invariant values are studied. The model values of the impedance matrices obtained by solving the inverse problem by interactive fitting the 3D model invariant curves of apparent electrical resistivity to the experimental curves for the central part of the Altai–Sayan region were used as the test data. The high conductivity anomalies obtained by 3D inversion are correlated with the locations of earthquake sources, deep faults, domains of increased attenuation of the converted waves from the earthquakes, and low velocities of P-waves in the deep seismic sounding and earthquake converted waves methods.

中文翻译：

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大地电磁数据三维反演在阿尔泰-萨彦地区地震震源区研究中

大地电磁阻抗矩阵分量的三维 (3D) 反演用于构建阿尔泰-萨彦地区的地电模型。基于模型和经验数据，研究了阻抗矩阵的所有四个分量及其不变量值的三维反演的可能性。通过将视电阻率的 3D 模型不变曲线交互式拟合到阿尔泰-萨彦地区中心部分的实验曲线来求解逆问题所获得的阻抗矩阵的模型值被用作测试数据。通过 3D 反演获得的高电导率异常与震源位置、深断层、地震转换波衰减增加的区域、