NE Queensland (Dobbyn Millungera) rad

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.

辐射测量法（radiometric method）或称伽马射线能谱法（gamma-ray spectrometric method），可通过探测地球表面附近的伽马射线自然变化，表征钾、铀、钍的天然放射性衰变过程。此类数据采集自由联邦、各州及北领地政府与私营部门开展的航空地球物理勘测。