A hydrogeophysical synthetic model generator

HGmod is a computer program that builds on stochastic realizations of porosity fields to derive electrical conductivity, dielectric permittivity and hydraulic permeability models. The presence of clay, the influence of salinity as well as temperature of the fluid of imbibition are taken into account in the underlying formulations. The saturated and unsaturated zones are also considered through the application of a saturation profile on the porosity field. A micro-geometrical model is used to relate the porosity to the clay fraction. This model also used to derive an expression for the pore specific surface of the sand-clay mixture. The specific surface is subsequently used to compute the conduction at the pore surface when building electrical conductivity models. Dielectric permittivity fields are built by successive applications of either the Hanai-Bruggeman or Maxwell-Garnett mixing models, depending on the relative proportions of sand, clay, water or air. In addition, the dielectric permittivity of water and clay follow a Cole-Cole behavior. HGmod is therefore a versatile tool useful to generate synthetic datasets needed to anticipate the geophysical response under specific conditions and to study hydrogeophysical sensitivity or resolution analysis.

For more information, see the paper

  • [DOI] B. Giroux and M. Chouteau, “A hydrogeophysical synthetic model generator,” Computers & geosciences, vol. 34, iss. 9, pp. 1080-1092, 2008.
    Author = {Bernard Giroux and Michel Chouteau},
    Date-Added = {2013-08-30 15:00:33 +0000},
    Date-Modified = {2013-08-30 15:27:00 +0000},
    Doi = {10.1016/j.cageo.2007.11.006},
    Issn = {0098-3004},
    Journal = {Computers & Geosciences},
    Keywords = {Dielectric permittivity},
    Number = {9},
    Pages = {1080 - 1092},
    Title = {A hydrogeophysical synthetic model generator},
    Url = {http://www.sciencedirect.com/science/article/pii/S0098300408000484},
    Volume = {34},
    Year = {2008},
    Bdsk-Url-1 = {http://www.sciencedirect.com/science/article/pii/S0098300408000484},
    Bdsk-Url-2 = {http://dx.doi.org/10.1016/j.cageo.2007.11.006}}

Download the code

News & updates

  • Sept 11 2008: Source code updated to correct a little bug in FFT-MA routine.
  • March 3 2011: There is an error in equation 8 of the paper also present in the old version of the code (in the file MilieuPoreux.h). The source code available on this page has been corrected.
  • Sept 11 2012: Now using the better maintained boost C++ library instead of the MTL library to compute kriging weights. Some small bug corrections.
  • Nov 19 2012: Now possible to save models in VTK format. Use paraview to view in 3D.
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