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Theoretical Developments in Electromagnetic Induction Geophysics with Selected Applications in the Near Surface

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Academic year: 2021

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Fig. 1 Performance of the MUMPS direct solver with increasing number of unknowns in a CSEM forward modeling problem; a memory usage; b time for matrix factorization; c time for a single solution (after Streich 2009)
Fig. 2 2-D IE transient solutions for unit dipole excitation of a resistive strip. Contour units, mA/km (after Swidinsky and Edwards 2009)
Fig. 3 (top) Thin-sheet structure showing layers of heterogeneous conductance S(r) and transverse resistance T(r); (bottom left) a model containing heterogeneous conductance S(x, y); (bottom right) the inversion result (after Singer and Fainberg 2007)
Fig. 4 Distribution of EM34 apparent conductivity readings within each of the k = 4 classified stratigraphic units A–D: a 10-m; b 20-m; c 40-m intercoil spacing (after Triantafilis and Buchanan 2009)
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