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  • This dataset contains scanned geomagnetic absolute observation records from Australian Geomagnetic Observatory: Gnangara (GNA). Files names delineate the observatory, observation year, type of form and folder. e.g. GNA2000OBS_19 (GNA: Gnangara Observatory)(2000: Year)(OBS: Observation Form)(19: Folder). Files are stored as station and year based PDF and individual tiff files per page.

  • This dataset contains scanned geomagnetic absolute observation records from Australian Geomagnetic Observatory: Macquarie Island (MCQ). Files names delineate the observatory, observation year, type of form and folder. e.g. MCQ2000OBS_19 (MCQ: Macquarie Island Observatory)(2000: Year)(OBS: Observation Form)(19: Folder). Files are stored as station and year based PDF and individual tiff files per page.

  • This dataset contains scanned geomagnetic magnetogram records from Toolangi Geomagnetic Observatory. Files names delineate the observatory, observation year, type of data, month range, folder and page. e.g. TOO 1985 GRAM - JUL - AUG - 73_00031 (TOO: Toolangi Observatory)(1985: Year)(GRAM: Magnetogram)(JUL - AUG: month range)(73_00031: Folder and page). Files are stored as station and year based PDF and individual tiff files per page.

  • This dataset contains scanned geomagnetic magnetogram records from Wilkes Geomagnetic Observatory. Files names delineate the observatory, observation year, type of data, month range, folder and page. e.g. TOO 1985 GRAM - JUL - AUG - 73_00031 (TOO: Toolangi Observatory)(1985: Year)(GRAM: Magnetogram)(JUL - AUG: month range)(73_00031: Folder and page). Files are stored as station and year based PDF and individual tiff files per page.

  • This dataset contains scanned geomagnetic absolute observation records from Australian Geomagnetic Observatory: Canberra (CNB). Files names delineate the observatory, observation year, type of form and folder. e.g. CNB2000OBS_19 (CNB: Canberra Observatory)(2000: Year)(OBS: Observation Form)(19: Folder). Files are stored as station and year based PDF and individual tiff files per page.

  • <p>The Geological Survey of South Australia commissioned the Gawler Craton Airborne Survey (GCAS) as part of the PACE Copper initiative. The airborne geophysical survey was flown over parts of the Gawler Craton in South Australia. The program was designed to capture new baseline geoscientific data to provide further information on the geological context and setting of the area for mineral systems (http://energymining.sa.gov.au/minerals/geoscience/pace_copper/gawler_craton_airborne_survey). <p>The survey design of 200 m spaced lines at a ground clearance of 60 m can be compared with the design of previous regional surveys which generally employed 400 m line spacing and a ground clearance of 80 m. The new survey design results in ~2 x the data coverage and ~25% closer to the ground when compared to previous standards for regional surveys in South Australia. <p>Survey blocks available for download include: <p>Streaky Bay, block 5 <p>Gairdner, block 6A <p>Spencer, block 7 <p>Kingoonya, block 9B <p>The following grids are available in this download: <p>• Laser-derived digital elevation model grids (m). Height relative to the Australian Height Datum. <p>• Radar-derived digital elevation model grids (m). Height relative to the Australian Height Datum. <p>• Total magnetic intensity grid (nT). <p>• Total magnetic intensity grid with variable reduction to the pole applied (nT). <p>• Total magnetic intensity grid with variable reduction to the pole and first vertical derivative applied (nT/m). <p>• Dose rate concentration grid (nGy/hr). <p>• Potassium concentration grid (%). <p>• Thorium concentration grid (ppm). <p>• Uranium concentration grid (ppm). <p>• NASVD processed dose rate concentration grid (nGy/hr). <p>• NASVD processed potassium concentration grid (%). <p>• NASVD processed thorium concentration grid (ppm). <p>• NASVD processed uranium concentration grid (ppm). <p>The following point located data are available in this download: <p>• Elevation. Height relative to the Australian Height Datum. Datum: GDA94 <p>• Total Magnetic Intensity. Datum: GDA94 <p>• Radiometrics. Datum: GDA94

  • Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. These line dataset from the GA302 Capel and Faust Basins MSS survey were acquired in 2006 for Geoscience Australia. This survey acquired a range of pre-competitive geological and geophysical data that included seismic reflection, gravity, magnetic and swath bathymetry measurements, as well as seafloor dredge samples.

  • Intrepid Geophysics have created a set of products that add value to the previously generated Total Magnetic Intensity (TMI) Grid of Australia 2019 - seventh edition, produced by Geoscience Australia. These products enhance the interpretability of the original data and allow additional and novel insight into the regions covered. Intrepid Geophysics have created these products using its propriety Intrepid software.

  • This image is a greyscale image of the Total Magnetic Intensity (TMI) Anomaly Image of Australia with Variable Reduction to Pole (VRTP). Total magnetic intensity (TMI) data measures variations in the intensity of the Earth magnetic filed caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. A variable reduction to Pole is aimed at locating magnetic anomalies exactly above their source bodies and without any distortion. The image is created from the 2019 variable reduction to Pole of the TMI grid with a grid cell size of ~3 seconds of arc (approximately 80 m). This image only includes airborne-derived TMI data for onshore and near-offshore continental areas. The image provides a better interpretation of the magnetic data by giving an accurate location of magnetic source bodies.

  • This dataset contains scanned geomagnetic absolute observation records from Australian Geomagnetic Observatory: Alice Springs (ASP). Files names delineate the observatory, observation year, type of form and folder. e.g. ASP2000OBS_19 (ASP: Alice Springs Observatory)(2000: Year)(OBS: Observation Form)(19: Folder). Files are stored as station and year based PDF and individual tiff files per page.