Seismic tomography in boreholes

Summary. Synthetic seismic tomographic data sets for cross-hole and hole-to-surface arrays are computed and inverted. Inversion (imaging) is performed through an iterative projection solution to a matrix equation. The orientation as well as the position of an anomaly relative to the source and recorder arrays affects both the rate of convergence of the solution and the resolution obtained. Data density and distribution determine the physical validity of the image obtained at convergence. Borehole tomography is apparently a viable method for imaging inter-hole structure.

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