Rapid 2D Inversion By Multichannel Deconvolution Of Geophysical Profile Data

High resolution geophysical data are now often acquired in regular profile geometries, where pseudo<br>section display modes give very useful qualitative insight. For a more quantitative foundation on which to<br>base decisions we need a proper data inversion approach. These years the growth in airborne and surface<br>based acquisition power more than matches the growth in computer power. This has accentuated the need<br>for inversion methods that are rapid and yet safe and easy to use for non-specialists.<br>Approximate inversion methods based on the Born approximation are well suited for this purpose as<br>shown by Loke and Barker (1995) for the case of DC geoelectrical multi-offset profiling. Their approach is<br>adequate for relatively short, detailed profiles. In a similar study Li and Oldenburg (1992, 1994) show<br>how to solve the approximate inversion of DC data in the Fourier domain, thereby gaining an important<br>speed-up when data profiles are long and densely sampled. Meller et al. (1996a) test this method both<br>numerically and on densely sampled field data acquired with the Pulled Array Continuous Electrical<br>Profiling technology (Sorensen, 1995, 1996).