Walsh (Mt Mulgrave) Qld 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.

放射性测量法（radiometric method）与伽马能谱法（gamma-ray spectrometric method）可探测地球表面附近测得的伽马射线的自然变化，此类伽马射线源于钾、铀及钍的天然放射性衰变。该数据集采集自联邦、各州及北领地政府与私营部门开展的航空地球物理调查。