The inversion of this data set, which has 67 electrode positions and data points, takes seconds on a modern PC. This survey was carried out across a circular mound which is thought to contain some important Irish archaeological burial chambers Waddell, J.Īrchaeology Ireland, Vol. Chemical Engineering Journal, 77, The figure below shows an example from an electrical imaging survey in an area with fairly complex subsurface geology and significant surface topography. Complex resistivity tomography for environmental applications. Resistivity information from borehole and other sources can also be included to constrain the inversion process. Two different variations of the smoothness constrained least-squares method are provided one optimised for areas where the subsurface resistivity varies in a smooth manner such as chemical plumesand another optimised for areas with sharp boundaries such as massive ore bodies.Ī robust data inversion option is also available to reduce the effect of noisy data points. The smoothing filter can be adjusted to emphasize resistivity variations in the vertical or horizontal directions. However, the parameters which affects the inversion process can be modified by the user. The program will automatically choose the optimum inversion parameters for a particular data set. On a modern microcomputer, the inversion of a single pseudosection is usually completed within seconds to minutes.įour different techniques for topographic modelling are available in this program. The use of available memory is optimised so as to reduce the computer time by minimising disk swapping. This program has been optimised for the inversion of large data sets. It is completely automatic and the user does not even have to supply a starting model.
Res2dinv price software#
2D/3D-inversion software RES2DINV/RES3DINV The results from such surveys are usually plotted in the form of a pseudosection Figure 1a which gives an approximate but distorted picture of the subsurface geology. Two-dimensional 2D electrical imaging surveys are now widely used to map areas of moderately complex geology where conventional 1D resistivity sounding and profiling techniques are inadequate.
Supports on land, underwater and cross-borehole surveys Supports the Wenner alpha,beta,gammaWenner-Schlumberger, pole-pole, pole-dipole, inline dipole-dipole, equatorial dipole-dipole, gradient and non-conventional arrays.
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