top of page

Aarhus SPIA - DC/IP software 


Aarhus SPIA is a processing and inversion software for ground based TEM and DC/IP data. The graphical user interface of Aarhus SPIA simplifies the processing and inversion process by the possibility of editing data and models in the graphical user interface. The uncertainty can be changed for each data point, a priori information can be added to the starting model, and inversion models can be interpreted before making new inversions. For the inversion, the robust and fast AarhusInv inversion code is used.

The Aarhus SPIA DC module has an import function where data can either be typed into the software manually or loaded from external files. UTM coordinates can be added to each sounding during the import.

SPIA DC also supports IP data.


Perpetual license options

  • Standard License: license can be unregistered manually within the software. Can be used offline for a limited time.

  • Floating license: license is automatically unregistered when SPIA is closed. Needs internet connection and can not be used offline. Optimal if SPIA is used on several PC's.

Key features​

  • Easy-to-use data import of DC and IP data

  • Support for integrated IP data for inversion.

  • Support data files from Abem SAS instruments

  • Supports the EPSG coordinate reference system

  • Supports all 4-electrode configurations

  • Fully developed processing and inversion tools

  • Click to see sounding position on Open Streets Maps.

  • Simple model report function with single sided PDF files for each station

  • Export of models and data in pdf, png, csv and acsii file formats.

  • 1D few-, blocky and smooth inversion with AarhusInv code

  • Supports data import in .ves format or ABEM SAS instruments file formats.

  • Use existing model or load external model as starting model for inversion. 

Aarhus SPIA Inversion

Aarhus SPIA performs a 1D inversion with the robust and fast AarhusInv inversion code. Aarhus SPIA contains two inversion setups:


  • A simple one-click inversion setup where a few- and a many layered model is generated.

  • An advanced inversion setup where the starting model can be fully configured by deciding the number of layers, setting the thickness and depths of each layer and adding a priori information on each layer’s thickness or resistivity. 
    In the advanced setup, it is also possible to load an external start model from file or from an already existing model in SPIA.

SPIA DC 3.6 import
bottom of page