GSQ Mary Kathleen Uranium 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 (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.This radiometric uranium grid has a cell size of 9e-05 degrees (approximately 10m) and shows uranium element concentration of the Isa Region Airborne Magnetic Radiometric and DEM Survey, QLD, 2017 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2017 by the QLD Government, and consisted of 113387 line-kilometres of data at a line spacing between 50m and 100m, and 50m terrain clearance.

辐射测量法（radiometric method），或称伽马射线能谱法（gamma-ray spectrometric method），通过检测地表附近的伽马射线自然变化，来反映钾（K）、铀（U）与钍（Th）的自然放射性衰变所产生的辐射信号。所采集的数据将通过标准流程进行处理，以确保记录的响应仅由地下岩石产生。所得数据集可通过解译，用以揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量核查，确保GA发布的最终数据符合使用要求。
本次辐射测量铀网格的单元尺寸为9e-05度（约10米），展示了2017年昆士兰州（QLD）伊萨地区航空磁辐射测量与数字高程模型（DEM）调查中的铀元素浓度，单位为百万分之一（ppm）。用于生成该网格的数据由昆士兰州政府于2017年采集，总测线里程达113387线公里，测线间距为50米至100米，地形离地高度为50米。