Interpex IX1D v3.50: Complete Guide to 1D Geophysical Inversion

The software supports Vertical Electrical Sounding (VES) data interpretation. It accommodates a wide range of traditional electrode configurations used to map subsurface resistivity layers. Supported arrays include: Wenner Dipole-Dipole Pole-Dipole Pole-Pole Induced Polarization (IP)

For EM inversion, IX1D remains one of the few widely available 1‑D EM inversion software packages. While 2‑D and 3‑D EM inversion tools are rare, studies have successfully replaced them by using IX1D on dense profile data to build quasi‑2‑D sections.

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For surveys targeted at mineral exploration or environmental site characterization, IX1D models IP data collected alongside DC resistivity. It supports: Chargeability (measured in milliseconds) Phase angle (measured in milliradians) 3. Electromagnetic (EM) Sounding Methods

The software shines in its interactive graphical environment. As the user adjusts model parameters—such as layer thickness and resistivity—the software instantaneously calculates and displays the resulting theoretical sounding curve. This "forward modeling" capability is invaluable for educational purposes and for building initial models. It also features equivalence analysis , a vital tool to understand non-uniqueness, where different geological models can produce nearly identical apparent resistivity curves.

One of the most powerful features is the . In geophysics, multiple models can often explain the same set of data (ambiguity). IX1D explores the range of models that fit the data within a certain tolerance, helping geophysicists understand the uncertainty and limitations of their interpretation. Why Version 3.50 Still Matters

: If you have a well log, use the straight-line segment tool to reduce complex logs into discrete layers for easier inversion. Estimation Tools

The software takes that squiggly line and asks, "What combination of underground rock layers would produce this specific result?"

For more technical details or to purchase, you can visit the Interpex Official Website . Interpex IX1D V3.50 - Google Groups

Interpretation of chargeability in the time or frequency domain.

For any professional who needs to convert field data into actionable subsurface knowledge, Interpex IX1D v3.5.0 is not just a tool—it is a trusted workhorse that continues to set the standard for 1‑D geophysical inversion.

Disclaimer: This article is for informational purposes. Software features, availability, and licensing are subject to change. For the latest information, please refer to the official Interpex website or an authorized distributor.