Citation: | XiaoZhong Tong, JianXin Liu, AiYong Li. 2018: Two-dimensional regularized inversion of AMT data based on rotation invariant of Central impedance tensor. Earth and Planetary Physics, 2(5): 430-437. DOI: 10.26464/epp2018040 |
Considering the uncertainty of the electrical axis for two-dimensional audo-magnetotelluric (AMT) data processing, an AMT inversion method with the Central impedance tensor was presented. First, we present a calculation expression of the Central impedance tensor in AMT, which can be considered as the arithmetic mean of TE-polarization mode and TM-polarization mode in the two-dimensional geo-electrical model. Second, a least-squares iterative inversion algorithm is established, based on a smoothness-constrained model, and an improved