Download EMIGMA for CSEM/CSAMT Description
Download CSAMT demo database
Download
Land CSEM demo database
(works with our EMIGMA Demo)
The CSEM/CSAMT software package is available as a standalone license or as an add-on to other EMIGMA licenses.
In some communities, land controlled source surveys, are termed CSAMT and here the electric and magnetic fields are most often provided as a ratio or impedance for interpretation. In other communities, these surveys are termed CSEM, and in these communities the fields are used independently mirroring the older LOTEM surveys. EMIGMA may deal with all of these individual peculiarities between different paradigms.
Data Import
- ASCII and QCTool imports
- Native Zonge and Phoenix imports
- Free import development is provided with each license purchase
Data Processing and Correction
- 1D digital and spatial filters - Mean, Median, Gaussian and Savitzky-Golay
- Smoothing and Decimation
- Data Corrector tool combining dynamic spreadsheets and a line plotter for data cleaning, missing data interpolation and simultaneous plotting of different data channels for fast cross-analysis
- Geophysical survey merging
3D Modeling
Click image to enlarge
CSEM/CSAMT with 3D Tx
- Fast 3D simulations of any combination of voltage or electric field measurements, B fields and impedance
- Model suite generation and batch mode
- Unlimited prism, plate and polyhedra targets
- Multiple body interactions
- Modeling of topography effects
- Ability to handle full contrast between host and bodies
- Interactive 3D geophysical model building tool
1D CSEM/CSAMT Inversion
- Smooth Occam technique with fixed layer thickness
- Sharp layer Trust Region technique with full resistivity and thickness constraints
- Invert for E,V field, B field or Z impedance using the 3D source
- User defined starting model and inversion parameters
3D CSEM/CSAMT Inversion
- 3D grid inversion with user selectable azimuth, horizontal and vertical grid cell controls
- Inversion includes two corresponding forward algorithms used in inversion proce
- Joint inversion of electric and magnetic field components
- Inversion of impedance with apparent rho and/or phase
- Resistivity constraints, use forward models for inversion control
Data Display and Analyses
- 3D data display as profiles, vectors, true 3D surfaces or contoured surface with 3D structure representation
- Section cutting of 3D model displays in the 3D Visualizer
- Pseudo-section, depth images
- PEXShow tool - 2D representation of Resistivity/ CSAMT inversions with easy-to-switch-to susceptibility and conductivity sections
- Grids: Natural Neighbor, Delauney Triangulation, Minimum Curvature and Thin-Plate-Splines
- Contours: 2D and 3D surfaces
- Line plots
- Residual plots
- For more detailed data display capabilities, see EMIGMA Complete
Last updated Nov, 2025