GSWA Devils Creek percent Potassium 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 potassium grid has a cell size of 0.00083 degrees (approximately 84m) and shows potassium element concentration of the Devil's Creek, WA, 1999 in units of percent (or %). The data used to produce this grid was acquired in 1999 by the WA Government, and consisted of 3935 line-kilometres of data at 300m line spacing and 70m terrain clearance.

放射性测量法（又称伽马能谱法）通过检测地球表面附近的伽马射线自然变化，以反映钾（K）、铀（U）与钍（Th）的天然放射性衰变产生的辐射信号。所采集的数据将通过标准化流程进行处理，确保记录的响应仅源于地下岩石的辐射。经处理得到的数据集可通过解译，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，以确保GA发布的最终数据符合使用要求。
该放射性钾元素网格的单元尺寸为0.00083度（约合84米），展示了1999年西澳大利亚州（Western Australia，缩写WA）魔鬼溪（Devil's Creek）区域的钾元素浓度分布，单位为百分比（%）。本网格所用数据由西澳大利亚州政府于1999年采集，数据覆盖测线总长3935公里，测线间距为300米，采集时飞行离地高度为70米。