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PADS Power PCB 3.0

For more information about PADS Power PSB visit PADS Software Incorporated

Res2Dinv

RES2DINV is a computer program which will automatically determine a two-dimensional (2-D) resistivity model for the subsurface for the data obtained from electrical imaging surveys (Griffiths and Barker 1993). Since it is a Windows based program, any Windows compatible graphics card or printer is automatically supported. It has been tested with video screen modes of up to 1600 by 1200 pixels and 256 colours.
Figure 1 shows an example of the electrodes arrangement and measurement sequence which can be used for a 2-D electrical imaging survey. This program is designed to invert large data sets (with about 100 to 5000 datum points) collected with a system with a large number of electrodes (about 25 to 650 electrodes).
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Res3Dinv

RES3DINV is a computer program which will automatically determine a three-dimensional (3-D) resistivity model for the subsurface using the data obtained from a 3-D electrical imaging E-SCAN type of survey (Li and Oldenburg 1992). The electrodes for such a survey are arranged in a rectangular grid (Figure 1). It should first be emphasised that full 3D surveys are not merely a series of 2D surveys, but a different approach has to be used. More details on the practical use of the pole-pole, pole-dipole and dipole-dipole arrays for 3D surveys are given in Appendices A, B and C. The most common arrays used for 3-D surveys are the pole-pole, pole-dipole and dipole-dipole arrays. Other arrays do not provide sufficient data coverage for a full 3-D inversion. On a computer with sufficient memory, this program can handle survey grids with up to 43 by 43 (or 1849) electrodes!
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