GSV Orbost Helicopter Vic radiometric line data

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），可通过测量地球表面附近探测到的伽马射线的自然变化，反演钾、铀、钍天然放射性衰变产生的辐射特征。该数据集由联邦（Commonwealth）、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项目采集所得。