GSWA Anketell 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 0.00028 degrees (approximately 30m) and shows potassium element concentration of the Anketell (Detailed), WA, 2002 in units of percent (or %). The data used to produce this grid was acquired in 2002 by the WA Government, and consisted of 23340 line-kilometres of data at 150m line spacing and 25m terrain clearance.

放射性测量法（radiometric method，又称伽马能谱测量法）通过检测地球表面附近伽马射线的自然变化，反映钾（K）、铀（U）和钍（Th）的自然放射性衰变过程。采集的数据经标准方法处理，确保记录的响应仅源于地下岩石。处理结果生成的数据集可通过解译揭示地下地质结构。处理后的数据由GA地球物理学家进行质量检查，以保证GA发布的最终数据符合预期用途。

该放射性钾栅格的单元格大小为0.00028度（约30米），以百分比（%）为单位展示了2002年西澳大利亚州（WA）Anketell地区（详细版）的钾元素浓度。生成该栅格所用的数据由西澳大利亚州政府于2002年采集，包含23340线公里的数据，线间距150米，地形净空高度25米。