GSWA Eucla Basin 4 Madura 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 0.00042 degrees (approximately 43m) and shows potassium element concentration of the Madura, WA, 2010 (Eucla Basin 4) in units of percent (or %). The data used to produce this grid was acquired in 2010 by the WA Government, and consisted of 103672 line-kilometres of data at 200m line spacing and 50m terrain clearance.辐射测量法（或称伽马能谱法）通过检测地球表面附近的伽马射线自然变化，表征钾（K）、铀（U）与钍（Th）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处理，确保记录的响应信号仅来自地下岩石的辐射。经处理得到的数据集可通过解译，揭示地下地质构造特征。经处理的数据将由GA地球物理学家开展质量校验，以保障GA发布的最终数据符合使用要求。本次辐射测量钾元素网格的单元尺寸为0.00042度（约合43米），展示了2010年西澳大利亚州马杜拉地区（Eucla盆地4区）的钾元素浓度分布，浓度单位为百分比（%）。用于生成该网格的数据由西澳大利亚州政府于2010年采集，总覆盖里程达103672线公里，测线间距为200米，地形离地高度为50米。