Resistivity measurements rely on expanding the electrode separation in order to achieve ever deeper measurements, leading to a larger volume of the subsurface material being sampled for each successive depth level. As a result the each resistivity measurement represents the bulk resistive properties of the ground- referred to as the Apparent Resistivity. The recorded Apparent Resistivity is represented as a point measurement in the dataset. In order to interpret variations in the electrical properties, and create a ground modal, it is necessary to mathematically calculate the subsurface conditions required to produce an equivalent dataset to the one recorded by the instrument- this is called inversion.
RES2DINV is one of the most common inversions packages for calculating 2D Resistivity and Chargeability models. The software package is fully automated and advises the user on what modal and inversion parameters are applicable for the dataset, or how parameters should be adjusted.
Software for 3D resistivity and IP imaging. ZondGM3D software for 3D gravity and magnetic inversion - Duration: 10:44. Alex Kaminsky 4,759 views. The MT method supports the full workflow from data visualization and preconditioning to 1D and 2D forward and inversion modeling. The 3D MT modeling module provides all the necessary tools to build, refine, and populate the 3D resistivity mesh that is used by the 3D finite-difference forward-modeling engine to compute the synthetic MT soundings.
A least-squares routine is used to perform the inversion and RES2DINV permits the user to adjust the style of the inversion routine as well as key parameters like the dampening factor.
3d Resistivity Inversion Software Downloads Free
RES3DINV is capable of inverting 3D apparent resistivity volumes measured using a regular grid of surface electrodes and is a powerful tool for resoling complex buried structures.
The software has a number of features for optimising the least-squares routine for faster completion on large datasets. Immersive reader and microsoft word for mac.
Features
- Finite element and Finite Difference models.
- Optimised damping factor.
- Optimised Qusi-Newton least-squares method (for large datasets).
- Borehole, floating and underwater electrode arrays are also supported.
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Technical Specifications
3d Resistivity Inversion Software Downloads Pdf
RAM Memory: | Minimum 1Gb |
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Operating System (OS): | Windows XP-10 (32 & 64bit) |
Processor: | Optimised for Multi-Core Processors |
Data Sheet
- RES2DINV & RES3DINV Datasheet (PDF)
Literature
- Geotomo Resistivity Notes (2015)(PDF 10MB)