Arenite Area A, WA, 1994 and Arenite Area B, WA, 1996 (P772), 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 Arenite Area A, WA, 1994 and Arenite Area B, WA, 1996 (P772), radiometric line data, AWAGS levelled were acquired in 1994 by the WA Government, and consisted of 19723 line-kilometres of data at 250m 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.

放射测量法（radiometric method），又称伽马能谱法（gamma-ray spectrometric method），通过探测地表附近因钾（K）、铀（U）及钍（Th）自然放射性衰变产生的伽马射线，测定其天然波动特征。所采集的数据将通过标准方法处理，以确保记录的响应仅源于地下岩石。处理后生成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检查，以确保GA发布的最终数据符合使用要求。本次数据集为西澳大利亚州（Western Australia, WA）1994年Arenite砂岩区A、1996年Arenite砂岩区B（编号P772）的经全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）平差的放射测量测线数据，由西澳政府采集，总测线长度达19723测线公里，测线间距为250米，离地高度为60米。为约束数据中的长波长分量，本次处理采用独立数据集——全澳航空地球物理调查（AWAGS）航空磁测数据——以控制本次调查数据的基准面。本调查数据实质上已完成AWAGS平差。