Forward modeling of TEM data using custom or standard waveforms (ramp-on/ramp-off).
Choose which layer thicknesses and resistivities are fixed and which can be inverted.
Assign error percentages to data points to influence how heavily the inversion algorithm weights them. Step 3: Forward Modeling and Initial Estimates
IX1D includes specialized modules for interpreting electromagnetic variations: interpex ix1d v350
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.
Using , the geophysicist:
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. Forward modeling of TEM data using custom or
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:
For marine EM work, a specialized variant handles inline E, crossline H, broadside E, joint inline‑E/crossline‑H soundings, step‑on/step‑off or impulse current sources, and even anisotropic resistivity models.
To safeguard geological realities during algorithmic calculations, users can toggle "Fix Flags". This feature locks known variables—such as a water table depth or a specific bedrock layer resistivity verified by drilling—while allowing the software to solve for unknown layers. 4. Equivalence Analysis Step 3: Forward Modeling and Initial Estimates IX1D
You might ask: With modern 2D ERT and 3D resistivity imaging, why invest time in IX1D v350?
Commonly used by geologists and engineers, it specializes in , which means it takes electrical or electromagnetic data collected on the surface and "translates" it into a vertical picture of soil and rock layers. Core Functionality
The software supports , resistivity with IP , and various EM methods , including TEM (Transient Electromagnetics) and Frequency-Domain EM (FDEM). Key Features of IX1D v350