Alice Springs Region - Simpson Desert North, NT, 2003 (P1024), 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 Alice Springs Region - Simpson Desert North, NT, 2003 (P1024), radiometric line data, AWAGS levelled were acquired in 2003 by the NT Government, and consisted of 52000 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.

辐射测量法（radiometric method，又称伽马射线能谱法）可通过检测地球表面附近的伽马射线自然变化，观测由钾（K）、铀（U）与钍（Th）的自然放射性衰变产生的信号。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。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质调查局（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2003年北领地（NT）爱丽斯泉地区——辛普森沙漠北部的辐射测量航线数据（编号P1024），经澳大利亚全国航空地球物理调查（AWAGS）平差校正，由NT政府于2003年采集。该数据集包含总长度达52000线公里的航测数据，航线间距为400米，飞行离地高度为80米。为约束数据中的长波长信号，研究人员采用独立数据集——澳大利亚全国航空地球物理调查（AWAGS）航磁数据，对本次调查数据的基准面进行校正。本调查数据已基本完成AWAGS平差处理。