Experimental Validation of the Electrokinetic Theory and Development of Seismoelectric Interferometry by Cross-Correlation

Figure 16

Comparison between the exact Green’s function 𝐺^𝐸,𝑓(𝑥_𝐵,𝑥_𝐴,𝑡) and the Green’s function retrieved by considering only seismic boundary source contributions in the right-hand side of (52). In other words, the contributions of the domain sources and electromagnetic boundary sources are neglected. As can be seen, the amplitude errors between the exact and retrieved Green’s functions are acceptable (about 10% or less). Because only the Green’s function corresponding to the positive time window is considered here, no spurious events (which reside in the negative time window) are visible.