GSWA Widgiemooltha 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 21m) and shows potassium element concentration of the Widgiemooltha 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 92768 line-kilometres of data at 100m line spacing and 50m terrain clearance.

辐射测量法（radiometric，亦称伽马能谱法）可通过采集地表附近的伽马射线自然变化数据，表征由钾（K）、铀（U）和钍（Th）天然放射性衰变所引发的辐射信号特征。所采集的数据将通过标准化流程进行处理，以确保记录的辐射响应仅来源于地下岩石。经处理得到的数据集可用于解译，以揭示地下地质构造。经处理的数据将由GA的地球物理学家开展质量核验工作，确保GA发布的最终数据符合使用需求。本次发布的辐射测量钾元素网格数据栅格单元尺寸为0.00021度（约21米），展示了2013年西澳大利亚州（WA）温杰穆尔塔北部区域的钾元素浓度分布，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2013年采集，总测线长度达92768线公里，测线间距为100米，地形离地高度为50米。