NT P1268 Dunmarra 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.

放射测量法（radiometric method），又称伽马射线能谱法（gamma-ray spectrometric method），可对地球表面附近检测到的伽马射线自然变化进行测量，这些伽马射线由钾、铀、钍的自然放射性衰变产生。该数据集由英联邦、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得到。