Robert combined 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 0.00063 degrees (approximately 66m) and shows potassium element concentration of the Robert merge, 1991-1998 in units of percent (or %). The data used to produce this grid was acquired in 1991 by the WA Government, and consisted of 82900 line-kilometres of data at 300m line spacing and 60m terrain clearance.

放射测量法（radiometric method，亦称伽马射线能谱法（gamma-ray spectrometric method））可探测地表附近因钾（K）、铀（U）及钍（Th）自然放射性衰变产生的伽马射线自然变化。所采集的数据将通过标准流程处理，以确保记录到的响应仅由地下岩石所致。经处理得到的数据集可通过解译揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量核查，以确保GA发布的最终数据符合使用要求。本次发布的放射测量钾元素网格数据单元尺寸为0.00063度（约合66米），展示了1991-1998年Robert合并数据集的钾元素浓度，单位为百分比（%）。本次网格数据的原始采集工作由西澳大利亚州政府（WA Government）于1991年完成，原始数据涵盖总长度达82900线公里的观测数据，测线间距为300米，观测时的地形离地高度为60米。