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Magnetotelluric data

Magnetotellurics is an electromagnetic geophysical method of imaging the earth's subsurface. It uses natural variations in the earth's magnetic field to map contrasts in the electrical resistivity of the subsurface.

Over the last thirty years many sets of magnetotelluric (MT) data have been collected across South Australia.

These data image changes in the crust and mantle electrical resistivity from the top few metres to several hundred kilometres depth.

Such resistivity models are then interpreted geologically in terms of the fluid, thermal and structural evolution of the lithosphere.

Undertaking an MT survey, Paralana, South Australia
Goran Boren from the University of Adelaide setting up an MT survey at Paralana, South Australia

Download magnetotelluric survey datasets

Magnetotelluric survey datasets can be downloaded from the South Australian Resources Information Geoserver (SARIG).

Note: Optimal performance for SARIG is provided by Google Chrome, Firefox or Safari browners

  • Go to the Data tab on the Map Layers widget
  • Open the Geophysical Databases tab
  • Check Electrical Survey
  • When the map refreshes select Identify from the Search/Identify tab on the top left widget to draw area on map
  • Click on the required point on the map to get the results page
  • Click on the Survey Name to download the data package

More information about using SARIG