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Earth, Planets and Space
Figure 5 | Earth, Planets and Space

Figure 5

From: Tracing of paleo-shear zones by self-potential data inversion: case studies from the KTB, Rittsteig, and Grossensees graphite-bearing fault planes

Figure 5

Model 1: noise-free data (after Jagannadha Rao et al. [ 1993 ]). Inversion results obtained by the Marquardt method (in which the inverse parameters are formulated in the mixed logarithmed and non-logarithmed space; log(h), log(k), log(a), and θ) using “Initial guess 2” that is shown in the figure. The observed and predicted SP data are marked by open and solid circles. The values of the regularization parameter (α) are also shown; see the text for details.

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