Kulgera West 2, NT, 1986 (P581), 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 Kulgera West 2, NT, 1986 (P581), radiometric line data, AWAGS levelled were acquired in 1986 by the NT Government, and consisted of 14037 line-kilometres of data at 500m line spacing and 100m 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.

放射测量法，或称伽马能谱法（gamma-ray spectrometric method），可测量地球表面附近探测到的伽马射线自然变化，此类射线源自钾（K）、铀（U）与钍（Th）的自然放射性衰变。所采集的数据将通过标准流程处理，以确保记录的响应仅源于地下岩石。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查，以确保GA发布的最终数据符合使用要求。本次数据集为1986年由北领地（Northern Territory, NT）政府采集的库尔格拉西区2号（Kulgera West 2, NT）1986年（P581）伽马能谱测线数据，该数据已针对AWAGS标准完成平差处理，总测线长度达14037测线公里，测线间距为500米，地形离地高度为100米。为抑制数据中的长波长干扰，本次处理采用独立数据集：澳大利亚全域航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）航空磁测数据，用于校正本次测线数据的基准面。本次测线数据实质上已按AWAGS标准完成平差处理。