Interpex has been a staple name in geophysical software for decades. The IX1D v350 is the latest iteration (as of recent years) of their classic 1D resistivity/IP forward modeling and inversion program. It’s designed primarily for geophysicists, engineering geologists, and hydrogeologists who need to interpret Vertical Electrical Soundings (VES) – specifically Schlumberger, Wenner, and dipole-dipole arrays.
The delta between your field curve and the forward curve guides manual adjustments.
The Inversion Iteration: With a click, the geophysicist ran the inverse calculation process. The software began iterating, automatically adjusting the thickness and resistivity of various layers to find a match. interpex ix1d v350
Battery Life and Thermals Battery life tends to align with the device’s modest hardware—sufficient for a half to full day of light use depending on settings and workload. Power management is tuned for efficiency rather than performance. Thermals are controlled through conservative clocking and a modest fan/heatsink arrangement; under heavy load the device may throttle to maintain safe temperatures.
Beyond its mathematical core, the software’s practical utility is enhanced by several key features. The “forward modeling” mode is exceptional for educational purposes and hypothesis testing, allowing users to build synthetic geological models (e.g., a resistive layer over a conductive aquifer) and instantly view the resulting apparent resistivity curve. Critically, the V350 version introduced advanced capabilities like the handling of induced polarization (IP) effects, allowing for the joint interpretation of resistivity and chargeability data—a powerful combination for mineral exploration. The ability to import and export data in multiple formats, alongside a manual "picking" routine to estimate asymptotic resistivities, streamlines what would otherwise be tedious calculations. Groundwater Exploration: Determining the depth to the water
Software usually has a lifespan of 2 to 5 years before it becomes obsolete. IX1D has lasted decades. Why?
Keywords integrated: Interpex IX1D v350, 1D resistivity inversion, Schlumberger sounding, apparent resistivity curve, layered earth model, geophysical software, VES interpretation, groundwater exploration. 1D resistivity inversion
Data Handling: Features easy data entry through spreadsheets or direct import from flat ASCII and USF files. Getting Started