Tallaringa South - 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 Tallaringa South - radiometric line data (AWAGS) were acquired in 2017 by the SA Government, and consisted of 146285 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.

辐射测量法（radiometric，或称γ射线能谱法）通过探测地表附近的γ射线自然变化，反映钾（K）、铀（U）和钍（Th）的自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开展处理，以确保记录的响应仅源自地下岩石。经处理后得到的数据集可通过解译揭示地下地质构造。经处理后的数据集将由GA地球物理学家进行质量核验，以确保GA发布的最终数据符合使用需求。本次塔拉林加南部辐射测量航线数据（AWAGS）由南澳大利亚州政府于2017年采集，总数据量达146285线公里，航线间距为200米，飞行地形离地高度为60米。为抑制数据中的长波长信号，研究人员引入独立数据集——澳大利亚全域航空物探调查（Australia-wide Airborne Geophysical Survey，简称AWAGS）航空磁测数据——对本次调查数据的基准值进行校正。本次调查数据已基本校准至AWAGS基准体系。