Description

3D ELECTRICAL RESISTIVITY TOMOGRAPHY INVERSION SOFTWARE User Manual Multi-Phase Technologies LLC 310 Rebecca Dr Sparks, NV 89436 775 425 9607 www.mpt3d.com inquiries@mpt3d.com Geostudi Astier srl Via Aiaccia 16/B 57017 Stagno (LI) –Italy +39 0586 943356 www.geoastier.it info@geoastier.it. EarthImager 3D - Advanced Geosciences, Inc. AGI is proud to introduce the new EarthImager 3D resistivity and IP inversion software. This software inverts resistivity and IP data acquired with electrodes arranged in boreholes and/or on the surface and presents a 3D volume of inverted resistivity data with advanced volume rendering technique. 3D Resistivity Inversion Software. 3D resistivity forward modeling and inver-sion. Surface resistivity imaging and cross bore-hole resistivity tomography. Automatic noisy data rejection. 3D data visualization and user interaction such as pan, zoom and rotation. Volume rendering with user-friendly trans-parency control. 3D ELECTRICAL RESISTIVITY TOMOGRAPHY INVERSION SOFTWARE Multi-Phase Technologies LLC 420 South Rock Blvd. Sparks, NV 89431 775 356 7844 www.mpt3d.com inquiries@mpt3d.com Geostudi Astier srl Via Aiaccia 16/B 57017 Stagno (LI) –Italy +39 0586 943356 www.geoastier.it info@geoastier.it.

1D-Inversion Software IX1D

IX1D is a 1-D Direct Current (DC) resistivity, Induced Polarization (IP) and TDEM sounding inversion program.

IX1D inversion software determines a 1D-model of subsurface resisitivity corresponding to the apparent resistivity measured by a vertical electrical sounding, or the changes in the secondary magnetic field measured by a TDEM sounding.

Features

1D inversion of SEV and TDEM sounding.
2D interpolation of 1D-sounding with IX1Dv3 software version.

System requirements

Operating system: Windows XP-10 (32 et 64 bits).
Mémoire vive : 512 Mo minimum.

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.

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.

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.

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.

Technical Specifications

Data Sheet

• RES2DINV & RES3DINV Datasheet (PDF)

Literature

3d Resistivity Inversion Software Download Last Evil 3

• Geotomo Resistivity Notes (2015)(PDF 10MB)