Leonora, WA, 1991/92 (P586), 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 Leonora, WA, 1991/92 (P586), radiometric line data, AWAGS levelled were acquired in 1992 by the WA Government, and consisted of 10225 line-kilometres of data at 400m line spacing and 60m 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 or gamma-ray spectrometric method）通过探测地球表面附近的伽马射线自然变化，表征钾（K）、铀（U）及钍（Th）的天然放射性衰变效应。所采集的数据将通过标准化流程处理，以确保记录的伽马射线响应仅源于地下岩石的放射性衰变。经处理得到的数据集可通过解译，揭示地下地质构造特征。经处理的数据将由GA地球物理学家开展质量核查，以确保GA发布的最终数据满足实际应用需求。
本次数据集为西澳大利亚州（Western Australia, WA）莱奥诺拉（Leonora）1991/1992年度（编号P586）的放射性测量航线数据，已完成澳大利亚全域航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）水准校正，由西澳大利亚州政府于1992年采集，总测线长度达10225测线公里，测线间距为400米，飞行离地高度为60米。
为抑制数据中的长波长信号，研究人员采用独立数据集——澳大利亚全域航空地球物理调查（AWAGS）航空磁测数据——对本次调查数据的基准水平进行校正。本次调查数据已基本完成AWAGS基准水准校正。