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Magnetic investigation of site of proposed compass swinging base, East Arm, Darwin

Created 17/10/2025

Updated 19/11/2025

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The purpose of the investigation was to determine the degree of uniformity of the earth's magnetic field, particularly with regard to magnetic Declination (or Variation), over an area on which it is proposed to construct a compass swinging base for land swinging of aircraft. Field work commenced on 11th December and terminated on 18th December. Instruments used comprised: Theodolite-Magnetometer and Earth Induction No.18, a Declinometer attachment fitted to a theodolite, and a vertical force Variometer. The results of the survey are presented in this report. Diagrams showing the results of the magnetic investigations, and a locality plan are included.

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Field Value
Title Magnetic investigation of site of proposed compass swinging base, East Arm, Darwin
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/1e56a8ea-efa2-4241-8db3-471619e062e4
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 17/11/2025
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        130.5,
        -12.7
      ],
      [
        131.1,
        -12.7
      ],
      [
        131.1,
        -12.0
      ],
      [
        130.5,
        -12.0
      ],
      [
        130.5,
        -12.7
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Magnetic investigation of site of proposed compass swinging base, East Arm, Darwin". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/magnetic-investigation-of-site-of-proposed-compass-swinging-base-east-arm-darwin