Rockhampton 1 and 2, Monto, 1994-1995, Qld,AIRDATA (P790), 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 Rockhampton 1 and 2, Monto, 1994-1995, Qld,AIRDATA (P790), radiometric line data, AWAGS levelled were acquired in 1994 by the QLD Government, and consisted of 156236 line-kilometres of data at 400m line spacing and 80m 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），亦称伽马射线能谱法（gamma-ray spectrometric method），可通过探测地表附近的伽马射线自然变化量开展测量，该信号源自钾（K）、铀（U）与钍（Th）的天然放射性衰变。所采集的数据将通过标准化流程进行处理，以确保记录到的响应仅源自地下岩石的辐射信号。经处理得到的数据集可通过解译，用于揭示地下地质构造。经处理后的数据将由GA地球物理学家进行质量核查，以确保GA发布的最终数据符合使用要求。本次数据集为1994至1995年间采集于昆士兰州（Qld）蒙托（Monto）地区的罗克汉普顿1号与2号测线航空放射性测量线数据（经AWAGS基准校正，编号AIRDATA (P790)），由昆士兰州政府于1994年采集，总测线长度达156236千米，测线间距为400米，飞行离地高度为80米。为压制数据中的长波长信号分量，本次调查采用了独立数据集：全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）的航空磁测数据，用于校准本次测线数据的基准水平；本次测线数据已基本校正至AWAGS标准。