GSWA P1065 Kellerberrin Southern Cross Boorabbin Hyden Lake Johnston Percent Potassiun Merged 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 86m) and shows potassium element concentration of the Kellerberrin-Southern Cross-Boorabbin-Hyden-Lake Johnston merge, 2004-2005 in units of percent (or %). The data used to produce this grid was acquired in 2004 by the WA Government, and consisted of 132046 line-kilometres of data at a line spacing between 200m and 400m, and 60m terrain clearance.

辐射测量法（radiometric method，又称伽马能谱法（gamma-ray spectrometric method））通过采集地表附近的伽马射线自然变化数据，以表征钾（K）、铀（U）与钍（Th）的天然放射性衰变所产生的辐射信号。所采集的数据将通过标准化流程进行处理，确保记录的响应信号仅源自地下岩石。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地球物理学家开展质量核验，确保GA发布的最终数据符合使用要求。该辐射测量钾元素网格的栅格单元尺寸为0.00083度（约86米），展示了2004-2005年Kellerberrin-Southern Cross-Boorabbin-Hyden-Lake Johnston拼接区域的钾元素浓度分布，单位为百分比（%）。用于生成该网格的数据由WA政府于2004年采集，总测线长度达132046线公里，测线间距介于200米至400米之间，地形离地高度为60米。