Batten Trough - low Th ties, 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 - low Th ties, 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.

辐射测量法（或称伽马射线能谱法）通过检测地球表面附近伽马射线的自然变化，表征钾（K）、铀（U）和钍（Th）的自然放射性衰变效应。采集的数据经标准方法处理，确保记录的响应仅源于地下岩石。处理结果生成的数据集可通过解译揭示地下地质结构。处理后的数据由GA地球物理学家进行质量核查，保证GA发布的最终数据具备适用价值。

这套1989年北领地（NT）巴滕海槽低钍关联（Batten Trough - low Th ties）辐射测量线数据（编号P573）经澳大利亚全国航空地球物理调查（AWAGS）校正，由NT政府于1989年采集，包含42860线公里数据，线间距250米至500米，地形净空高度100米。为抑制数据中的长波长干扰，研究采用独立数据集——澳大利亚全国航空地球物理调查（AWAGS）航空磁测数据——控制本调查数据的基准面。本调查数据本质上已按AWAGS标准完成校正。