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Magnetotelluric Survey in South-Eastern Mount Isa, QLD Australia

Created 17/10/2025

Updated 17/10/2025

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Magnetotelluric (MT) measures the natural variations of the Earth' magnetic and electrical (telluric) fields. The Audio-Magnetotelluric method (AMT) samples signal frequencies in the range of 20k Hz down to ~1Hz and provides data pertaining to the upper few kilometres of the Earth' crust. Broadband MT (BBMT) measures frequencies ranging from ~400 Hz down to periods of ~5000 s, providing measures of the conductivity of the crust. AMT and BBMT data were acquired at 138 stations with an interval of 2.5-5.0 km along a 690 km transect extending from Four Ways to Longreach in the South-eastern Mount Isa region. Full-waveform time series data were acquired and processed into frequency-domain transfer functions. Remote reference was applied to eliminate uncorrelated noise. After quality assurance, processed data were exported to industry-standard EDI files containing site info, impedance tensor, apparent resistivity, phase and vertical transfer function.

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Additional Info

Field Value
Title Magnetotelluric Survey in South-Eastern Mount Isa, QLD Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/ce56912c-6616-4f6d-8f58-d0b8bc2ec580
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 23/05/2014 - 15/07/2014
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        140.0,
        -24.0
      ],
      [
        144.5,
        -24.0
      ],
      [
        144.5,
        -19.0
      ],
      [
        140.0,
        -19.0
      ],
      [
        140.0,
        -24.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Magnetotelluric Survey in South-Eastern Mount Isa, QLD Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/magnetotelluric-survey-in-south-eastern-mount-isa-qld-australia