GSWA Kurnalpi North Thorium Grid Geodetic

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, uranium and thorium. The data are collected on airborne geophysical surveys conducted by Commonwealth, State & NT Governments and the private sector.

放射性测量法（Radiometric Method），又称伽马射线能谱法（Gamma-ray Spectrometric Method），该方法可对地球表层附近探测到的伽马射线的自然变化进行测量，这些变化源于钾（Potassium）、铀（Uranium）和钍（Thorium）的自然放射性衰变。本数据集的数据由英联邦、各州及北领地（NT）政府与私营部门开展的航空地球物理调查采集获取。