Gove, NT, 1991 (P552), 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 Gove, NT, 1991 (P552), radiometric line data, AWAGS levelled were acquired in 1991 by the NT Government, and consisted of 49539 line-kilometres of data at 500m line spacing 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）通过探测地球表面附近的伽马射线自然变化，以反映钾（K）、铀（U）及钍（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进行处理，确保记录到的响应仅来源于地下岩石的放射性衰变。处理后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验，确保GA发布的最终数据符合使用要求。
本次为北领地（Northern Territory, NT）高夫（Gove）地区1991年（编号P552）、经全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）基准平差的辐射测量航线数据，由北领地政府于1991年采集完成，总数据量达49539线公里，航线间距为500米，飞行离地高度为100米。
为抑制数据中的长波长分量，本次调查采用独立数据集——全澳航空地球物理调查（AWAGS）航空磁测数据——来控制测区数据的基准水平。本次测区数据本质上已按AWAGS基准完成平差校正。