Fig. 12From: Simultaneous inversion for source field and mantle electrical conductivity using the variable projection approachEvolution of RMS misfit and model roughness for alternating approaches. The displayed quantities and the calculation of roughness are the same as in Fig. 6. The curves are color-coded by inversion schemes, the lightest ones to the darkest ones corresponding to alt-Fibonacci, alt-5, alt-10, and alt-\(\infty\), respectivelyBack to article page