| Feature | IX1D v350 | IPI2WIN | Res1D | ZondRes1D | |---------|-----------|---------|-------|-----------| | User interface | Modern | Legacy | Basic | Modern | | Industry acceptance | Global standard | Russia/CIS | Mixed | Growing | | Inversion algorithms | LM + Occam | Gradient | LM | LM + Bayesian | | Support | Excellent | Limited | Good | Good | | Price | Mid-range | Low | Mid-range | Low-mid |
Verdict: IX1D v350 remains the most trusted name globally, especially for hydrogeological and engineering projects requiring defensible interpretations.
In hard-rock terrains (granite, basalt), weathered zones and fractures are conductive. Using Schlumberger soundings with IX1D v350, hydrogeologists can map the depth to bedrock and the saturated zone. A typical three-layer model (high resistivity topsoil → low resistivity weathered/fractured rock → high resistivity fresh bedrock) is rapidly resolved. interpex ix1d v350
The output includes:
Even before inversion, you can build hypothetical layered models and generate synthetic sounding curves. This is invaluable for survey design and teaching. | Feature | IX1D v350 | IPI2WIN |
The core Levenberg-Marquardt algorithm has been tweaked for better convergence stability, especially with noisy field data. v350 introduces adaptive damping factors that reduce the risk of overfitting—a common problem with earlier 1D codes.
At its core, IX1D v350 is a Windows-based interactive program designed for the processing, forward modeling, and inversion of DC resistivity sounding data. Unlike generic math packages, IX1D is purpose-built for geoelectrics. The "v350" designation indicates the version 3.50 release, which includes critical patches, UI enhancements, and compatibility fixes for modern operating systems (Windows 10 and 11). A typical three-layer model (high resistivity topsoil →
The software excels at converting apparent resistivity curves (measured in ohm-m) into a layered earth model—typically 2 to 7 layers—showing true resistivity and thickness for each layer. This output is essential for: