Data

Yathong Magnetic Gradient and Radiometric Survey, NSW, 2023, (P5023), K equivalent ground concentration grid

Geoscience Australia
Geophysical Acquisition & Processing Section
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
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Creative Commons Attribution 4.0 International Licence
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Commonwealth of Australia (Geoscience Australia) and State of New South Wales (Department of Regional New South Wales)

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Brief description

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected 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. This radiometric potassium grid has a cell size of degrees (approximately 40m) and shows potassium element concentration of the Yathong airborne magnetic gradient and radiometric survey, 2023 in units of percent (or %). The data used to produce this grid was acquired in 2023 by the NSW Government, and consisted of 65504 line-kilometres of data at 200m line spacing and 80m terrain clearance.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: This Yathong Magnetic Gradient and Radiometric Survey, NSW, 2023, (P5023), K equivalent ground concentration grid is an airborne-derived radiometric potassium grid for the Yathong airborne magnetic gradient and radiometric survey, 2023. The survey was acquired under the project No. 5023 for the geological survey of NSW. The grid has a cell size of degrees (approximately 40m). A total of 65504 line-kilometres of data at a line spacing of 200m and 80m terrain clearance were acquired to produce this grid. This radiometric potassium grid shows potassium element concentration of the Yathong airborne magnetic gradient and radiometric survey, 2023 in units of percent (or %). Noise-adjusted singular value decomposition (NASVD) has been applied to the data. NASVD is a spectral component analysis procedure for the removal of noise from gamma-ray spectra. Details of the specifications of individual airborne surveys can be found in the Fourteenth Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). This Index is also available online at http://pid.geoscience.gov.au/dataset/79134. Reference: Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).

Notes

Purpose
The data were acquired in collaboration with the Geological Survey of New South Wales (GSNSW) to provide high-resolution geological information across ~11,400 km2 of central NSW. The data has applications in mineral exploration (including critical minerals), groundwater, hydrogen, and soil mapping studies.

Created: 05 02 2024

Issued: 12 02 2024

Data time period: 21 05 2023 to 14 09 2023

This dataset is part of a larger collection

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145.79109,-31.75814 145.79109,-33.12664 144.78387,-33.12664 144.78387,-31.75814 145.79109,-31.75814

145.28747851896,-32.44238752661

text: westlimit=144.78386727092095; southlimit=-33.12663755679236; eastlimit=145.7910897670009; northlimit=-31.758137496427626; projection=GDA2020 (EPSG:7844)

Subjects
Australia | EARTH SCIENCES | Earth sciences | GADDS2.0 | K | NCI | NSW | Published_External | airborne digital data | gamma-ray | geophysical survey | geophysics | geoscientificInformation | grid | potassium | rad | radiometrics | raster | spectrometry | survey 5023 |

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Other Information
The Geophysical Archive Data Delivery System (GADDS2) portal provides HTTP download of geophysics datasets in a number of formats. Point and line datasets are available in NetCDF and ASEG-GDF2. Grid datasets are available in NetCDF, GeoTIFF and ERS. (File available for download in various formats from the GADDS2 portal)

uri : https://portal.ga.gov.au/persona/gadds

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