Coober Pedy - radiometric line data (AWAGS)

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 Coober Pedy - radiometric line data (AWAGS) were acquired in 2017 by the SA Government, and consisted of 90697 line-kilometres of data at 200m 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（亦称伽马能谱法）通过采集地球表面附近的伽马射线自然变化数据，来表征由钾（K）、铀（U）与钍（Th）的天然放射性衰变所产生的辐射信号。所采集的数据将通过标准流程进行预处理，以确保记录的辐射响应仅源于地下岩石。经处理后得到的数据集可用于解译，以揭示地下地质构造。GA的地球物理学家会对预处理后的数据开展质量核查，以确保GA发布的最终数据符合使用要求。
本次发布的库伯佩迪放射性测线数据（AWAGS）由南澳政府于2017年采集完成，总测线长度达90697线公里，测线间距为200米，飞行离地高度为60米。为约束数据中的长波长信号，项目采用独立数据集——全澳航空地球物理调查（Airborne Geophysical Survey，简称AWAGS）航空磁测数据——对本次测线数据的基准值进行校正。
本测线数据已基本平差至AWAGS基准。