Arthur-Pieman Area, NW Tasmania, TAS, 1996 (P652), 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 Arthur-Pieman Area, NW Tasmania, TAS, 1996 (P652), radiometric line data, AWAGS levelled were acquired in 1996 by the TAS Government, and consisted of 17093 line-kilometres of data at a line spacing between 100m and 200m, and 90m 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（又称伽马能谱法）通过检测地球表层附近的伽马射线自然变异，获取由钾（K）、铀（U）及钍（Th）天然放射性衰变所产生的信号。所采集的数据将通过标准流程处理，以确保记录的响应仅来源于地下岩石。由此生成的数据集可通过解译揭示地下地质构造。经处理的数据将由澳大利亚地球科学局（GA）的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。
本数据集为1996年塔斯马尼亚州（TAS）西北部亚瑟-皮曼地区（Arthur-Pieman Area）的辐射测量测线数据（编号P652），该数据已按全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）标准完成平差处理，由塔斯马尼亚州政府于1996年采集完成。数据集总测线长度达17093测线公里，测线间距介于100米至200米之间，飞行离地高度为90米。为约束数据中的长波长信号，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——来管控本次调查数据的基准面。本调查数据基本已按AWAGS标准完成平差。