Fig. 13
From: The effect of initial and prior models on phase tensor inversion of distorted magnetotelluric data
Schematic 2D illustration showing the concepts of a model and b data vectors. The vectors \({\varvec{m}}_\text {syn}\), \({\varvec{m}}_0\), and \({\varvec{m}}_k\) \((k=1,2, \ldots)\) represent the synthetic model, the initial model, and the model at the kth iteration, respectively. The vectors \({\varvec{d}}_\text {syn}\) and \({\varvec{d}}_k\) \((k=0,1,2,\ldots)\) represent the synthetic data and the responses calculated from the model at the kth iteration, respectively. \(\delta {\varvec{m}}_k\) and \(\delta {\varvec{d}}_k\) are the model and data correction vectors, respectively. The MCVAs and DCVAs are indicated by \(\alpha _k\) and \(\beta _k\), respectively, for each iteration step. The dashed circle in (b) represents the assumed observation error