GM-SYS 3D Modelling

The GM-SYS 3D Modelling extension to Oasis montaj enables you to design three dimensional models capable of accurately depicting the variation and irregularity of subsurface structures.

GM-SYS 3D TM is a 3D gravity and magnetic modelling package for surface-oriented models. A model is defined by a number of stacked surface grids with density, susceptibility and remanent magnetization distributions specified for the layer below each surface. Calculations are performed in the wave number domain and are based on Dr. Bill Pearson’s implementation of R. L. Parker’s algorithm (1972)[1]. The program is designed to run within Oasis montaj, making available all of the familiar grid manipulation and display routines in addition to application-specific routines.

To start working with the GM-SYS 3D Modelling extension, check the topics under the Get Started section.


  • [1] R. L. Parker, 1972, "The Rapid Calculation of Potential Anomalies", Geophysical Journal of the Royal Astronomical Society, vol. 31, pp. 447–455.