Batten Trough - Company travs NS, NT, 1989 (P573), 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 Batten Trough - Company travs NS, NT, 1989 (P573), radiometric line data, AWAGS levelled were acquired in 1989 by the NT Government, and consisted of 42860 line-kilometres of data at a line spacing between 250m and 500m, and 100m 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），又称伽马能谱法（gamma-ray spectrometric method），通过探测地表附近的伽马射线自然变化量，解析由钾（K）、铀（U）及钍（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化处理流程开展加工，以确保记录的辐射响应仅来自地下岩石的贡献。经处理得到的数据集可通过地质解译，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发布的最终数据符合使用要求。本次数据集为1989年由北领地（NT）政府采集的巴滕海槽（Batten Trough）——Company travs NS测线（NT，1989，编号P573）伽马能谱测线数据，已通过澳大利亚全国航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）完成平差校正。该数据集总测线长度达42860测线公里，测线间距介于250米至500米之间，航空测量离地高度为100米。为抑制数据中的长波长信号分量，研究人员采用独立数据集——澳大利亚全国航空地球物理调查（AWAGS）航空磁测数据，对本次调查数据的基准面进行校正。本测线数据已基本完成AWAGS基准平差。