UBC-GIF

Industry-standard advanced geophysical modelling and inversion programs. Includes 3D modelling and inversion programs for gravity and magnetic gradient data, resistivity and induced polarization, electromagnetics, and spontaneous potential. Developed by the University of British Columbia Geophysical Inversion Facility as stand-alone, they can also be used within GOCAD® Mining Suite. Many of the codes may be run directly from GOCAD workflow interfaces for organizing and documenting process flow, as well as facilitating the incorporation of geological constraints.

The licence price depends on the version and software selection that is made to fit your individual needs best.

Product catalogue

  • GRAV3D v5.0 or v3.0

    A library used for carrying out forward modelling and inversion of surface, airborne and/or borehole gravity data in 3D. The forward modelling is accomplished by using an integral equation approach on a tensor grid that computes and stores the (possibly compressed) sensitivity matrix. The inverse problem is solved as an optimization problem that minimizes the earth structure subject to adequately fitting the data and honouring additional specified constraints.

  • MAG3D v5.0 or 4.0

    A library used for carrying out forward modelling and inversion of surface, airborne and/or borehole magnetic data in 3D. Arbitrary combinations of field components in borehole, surface, and airborne surveys can be inverted simultaneously.  The forward modelling is accomplished by using an integral equation approach on a tensor grid that computes and stores the (possibly compressed) sensitivity matrix. The inverse problem is solved as an optimization problem that minimizes the earth structure subject to adequately fitting the data and honouring additional specified constraints.

  • DCIP2D v5.0 or 3.2

    Performs forward modelling and inversion of DC resistivity and IP data in 2D. All linear survey surface-array types, including non-standard or un-even arrays, can be inverted. It is compatible with dipole-dipole, pole-dipole and pole-pole arrays. Wenner, Schlumberger, gradient and other arrays can all be inverted. Forward modelling for the DC resistivity is carried out using finite volume techniques on a tensor grid. The inverse problem is solved as an optimization problem that minimizes the earth structure subject to adequately fitting the data and honouring additional specified constraints.

  • DCIP3D v5.0 or 2.1

    Performs forward modelling and inversion of DC resistivity and IP data over a 3D distribution of electrical conductivity and chargeability. The library works with the data acquired using general electrode configurations and arbitrary observation locations either on the earth’s surface or in a borehole. 3D surface topography is also fully incorporated in the modelling and inversion. Forward modelling for the DC resistivity is carried out using finite volume techniques on a tensor grid. The inverse problem is solved as an optimization problem that minimizes the earth structure subject to adequately fitting the data and honouring additional specified constraints.

  • EM1DFM v1.0

    Inverts any type of geophysical frequency domain loop-loop EM data to find one of four types of 1D models, with one of four variations of the inversion algorithm. Many permutations of model type, data type and algorithm choice are possible.

  • EM1DTM v1.0

    Inverts geophysical time domain EM data (B or dB/dt) from inductive sources to recover a 1D conductivity profile of the earth. The model objective function can be varied to provide models that range from 'smooth' to 'blocky' in accordance with the assumed geology. Variable strategies for estimating the trade-off parameter to balance the model structure and data misfit are provided. The program runs using an interface that allows multiple soundings to be stitched together into a profile.

  • SP3D v1.0

    Calculates the self-potential distribution of the electric streaming potentials that arise from fluid flow through a porous medium. A common volume is used to describe the hydrogeologic regime, cross-coupling model, and electrical conductivity.

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