Kakadu Stage II 1, NT, 1983 (P616), 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 Kakadu Stage II 1, NT, 1983 (P616), radiometric line data, AWAGS levelled were acquired in 1982 by the NT Government, and consisted of 46936 line-kilometres of data at a line spacing between 150m and 250m, and 80m 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.

放射性能谱法（radiometric method），亦称伽马射线能谱法，通过测量地表附近探测到的伽马射线自然变化，该变化源于钾（K）、铀（U）与钍（Th）的天然放射性衰变。所采集的数据将通过标准流程进行处理，以确保记录的辐射响应仅来自地下岩石。经处理得到的数据集可通过解译，揭示地下地质构造。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发布的最终数据符合使用需求。本数据集为1983年北领地（Northern Territory, NT）卡卡杜二期1号（Kakadu Stage II 1, NT, 1983，编号P616）的放射性能谱测线数据，已完成全澳航空地球物理调查（Airborne Geophysical Survey, AWAGS）平差校正。该数据由北领地政府于1982年采集，总测线长度达46936测线公里，测线间距介于150米至250米之间，飞行离地高度为80米。为约束数据中的长波长信号，研究人员采用独立数据集——全澳航空地球物理调查（AWAGS）航空磁测数据——来管控本次调查数据的基准水平。本次调查数据已基本完成针对AWAGS的平差校正。