Lagrange-Munro, WA, 2010 (North Canning 4) (P1230), 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 Lagrange-Munro, WA, 2010 (North Canning 4) (P1230), radiometric line data, AWAGS levelled were acquired in 2010 by the WA Government, and consisted of 103921 line-kilometres of data at 400m 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.

辐射测量法（radiometric，亦称伽马射线能谱法）通过探测地表附近的伽马射线自然变化，反演钾（K）、铀（U）与钍（Th）的天然放射性衰变所产生的辐射信号特征。所采集的数据将通过标准流程进行处理，以确保记录到的响应仅源于地下岩石的放射性衰变。经处理得到的数据集可通过解译，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发布的最终数据满足使用需求。
本次数据集为2010年由西澳大利亚州（WA）政府采集的拉格朗日-芒罗（Lagrange-Munro）、西澳2010（北坎宁4号，编号P1230）辐射测量测线数据，该数据已按澳大利亚全国航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）标准完成平差处理。本次数据总覆盖测线长度达103921公里，测线间距为400米，飞行离地高度为60米。为约束数据中的长波长分量，本次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——对本次调查数据的基准值进行校正控制。本次调查数据已基本按AWAGS标准完成平差校正。