West Kimberley (Prince Regent - Montague - Charnley), WA,2011 (P1236), 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 West Kimberley (Prince Regent - Montague - Charnley), WA,2011 (P1236), radiometric line data, AWAGS levelled were acquired in 2011 by the WA Government, and consisted of 145084 line-kilometres of data at a line spacing between 200m and 800m, and 50m 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，亦称伽马能谱法（gamma-ray spectrometric method））可探测地球表面附近因钾（K）、铀（U）及钍（Th）自然放射性衰变所产生的伽马射线自然变化。所采集的数据将通过标准流程进行处理，以确保记录的响应仅源于地下岩石的放射性作用。经处理后得到的数据集可通过解译揭示地下地质构造。处理后的数据将由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2011年由西澳州政府（WA Government）采集的西金伯利（Prince Regent - Montague - Charnley）地区、编号P1236的伽马能谱测线数据，已按全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey，简称AWAGS）标准完成平差处理。该数据集总测线长度达145084测线公里，测线间距介于200米至800米之间，地形离地高度为50米。为约束数据中的长波长分量，研究人员采用独立数据集——AWAGS航空磁测数据——对本次调查数据的基准值进行校正。本次调查数据已基本按AWAGS标准完成平差校正。