GSWA Menzies North 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 0.00021 degrees (approximately 22m) and shows potassium element concentration of the Menzies North, WA, 2013 in units of percent (or %). The data used to produce this grid was acquired in 2013 by the WA Government, and consisted of 94842 line-kilometres of data at 100m line spacing and 50m terrain clearance.

辐射测量法（或称伽马射线光谱法，gamma-ray spectrometric method）通过探测地球表面附近的伽马射线自然变化，研究钾（K）、铀（U）和钍（Th）的自然放射性衰变现象。采集的数据经标准方法处理，确保记录的响应仅来源于地下岩石。处理结果生成的数据集可通过解释揭示地下地质结构。经处理的数据由GA地球物理学家开展质量检查，以确保GA发布的最终数据符合预期用途。

该辐射测量钾网格的单元格大小为0.00021度（约22米），以百分比（%）为单位展示了2013年西澳大利亚州（WA）门齐斯北部地区的钾元素浓度。