Three-Dimensional Induced Polarization Parallel Inversion Using Nonlinear Conjugate Gradients Method

Figure 2

Forward modeling results from the BICGSTAB and CGPC numerical methods: (a) surface method (transmitters and receivers both on surface); (b) surface-borehole method (transmitters on the surface and receivers in borehole); (c) borehole-surface method (transmitters in borehole and receivers at surface); (d) borehole-borehole method (transmitters and receivers both in borehole).

(a)

(b)

(c)

(d)