King Island, Tas, 2001 (WTRMP Area A) (P822), 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 King Island, Tas, 2001 (WTRMP Area A) (P822), radiometric line data, AWAGS levelled were acquired in 2001 by the TAS Government, and consisted of 8633 line-kilometres of data at 200m 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（伽马能谱法）可检测地表附近伽马射线的自然变化，该变化源于钾（K）、铀（U）及钍（Th）的天然放射性衰变。采集所得数据将通过标准流程进行处理，确保记录的响应信号仅来自地下岩石。处理后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验，确保GA发布的最终数据符合使用要求。本数据集为2001年塔斯马尼亚州金岛（WTRMP A区，编号P822）的放射性测线数据，经澳大利亚全国航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）基准校正，由塔斯马尼亚州政府于2001年采集，总测线长度达8633测线公里，测线间距为200米，离地高度为80米。为压制数据中的长波长分量，本次调查采用澳大利亚全国航空地球物理调查（AWAGS）的航空磁测独立数据集对本次调查数据的基准值进行校正，本数据集已按AWAGS标准完成基准平差。