Officer Basin (Noorina, Wells, Birksgate, Lindsay), SA, 1982 (P476), radiometric line data, AWAGS levelled

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 Officer Basin (Noorina, Wells, Birksgate, Lindsay), SA, 1982 (P476), radiometric line data, AWAGS levelled were acquired in 1982 by the SA Government, and consisted of 17918 line-kilometres of data at 3000m line spacing and 150m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

放射性测量法（radiometric method），或称伽马能谱测量法（gamma-ray spectrometric method），通过测量地球表面附近探测到的伽马射线的自然变化，反映钾（K）、铀（U）和钍（Th）的自然放射性衰变过程。所采集的数据经标准方法处理，确保记录的响应仅来源于地下岩石。处理结果生成的数据集可用于解译地下地质构造。经处理的数据由GA地球物理学家进行质量检查，以确保GA发布的最终数据符合预期用途。
本数据集为1982年由南澳大利亚州政府（SA Government）采集的、经AWAGS校正的Officer盆地（Noorina、Wells、Birksgate、Lindsay区域）1982年（P476）放射性测线数据，包含17918测线公里的数据，测线间距3000米，地形净空高度150米。为约束数据中的长波长成分，研究使用了独立数据集——全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）的航空磁测数据——来控制本测线数据的基准面。因此，本测线数据本质上是以AWAGS为基准进行校正的。