Sandstone (Woodley,Sandstone), WA, 1996 (P773), 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 Sandstone (Woodley,Sandstone), WA, 1996 (P773), radiometric line data, AWAGS levelled were acquired in 1996 by the WA Government, and consisted of 9810 line-kilometres of data at 200m line spacing and 40m 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（伽马能谱）测量法通过检测地表附近的伽马射线自然变化，以反映钾（K）、铀（U）与钍（Th）的天然放射性衰变产生的辐射信号。所采集的数据将通过标准流程进行处理，确保记录的响应仅源于地下岩石的辐射。经处理得到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核查，以确保GA发布的最终数据符合使用要求。1996年，西澳大利亚州（WA）政府采集了编号为P773、命名为砂岩（伍德利砂岩）的放射性测线数据，该数据已针对全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey，简称AWAGS）完成平差处理，总测线长度达9810千米，测线间距为200米，飞行离地高度为40米。为抑制数据中的长波长信号偏移，研究人员采用独立数据集——全澳航空地球物理调查（AWAGS）航空磁测数据——对本次调查数据的基准面进行校正。本次调查数据实质上已统一至AWAGS基准体系完成平差。