Figure 12

Volume rendered⁵⁷ 3D misfit images from unconstrained and cooperative inversion of MT data at Nevada. A 3D representation of data misfit for unconstrained inversion outcome S1 and S2 can be compared misfit after texture guided cooperative inversion C6 and C9. The small gray spheres denote the locations of each surface MT measurement. The vertical Z axis is frequency in Hertz. The colors represent the raw percent difference between model and field data after the final inversion. The extremes in percent difference are rendered blue (negative) and red (positive) and a frequency slice is shown at about 200 Hz. The image highlights the substantial reduction in misfit for the cooperative inversion outcomes at each station. In particular the cooperative inversion outcome, C6, presents with significant improvement— approaching zero percent misfit across the major fault and over the thick cover region to the right on the 3D images (see Figs 4 and 5).