Cobar P5009 EXT 1 Potassium ground concentration grid

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 0.00039074 degrees (approximately 40m) and shows potassium element concentration of the Cobar Magnetic and Radiometric Survey, 2021 in units of percent (or %). The data used to produce this grid was acquired in 2021 by the NSW Government, and consisted of 53617 line-kilometres of data at 200m line spacing and 60m terrain clearance.

放射性（或伽马射线能谱）测量法通过检测地表附近的伽马射线自然变化，获取由钾（K）、铀（U）和钍（Th）自然放射性衰变产生的信号。所采集的数据将通过标准流程进行处理，以确保记录的响应仅源自地下岩石。经处理得到的数据集可用于解译，以揭示地下地质构造。处理后的数据将由GA的地球物理学家开展质量校验，以确保GA对外发布的最终数据满足使用需求。
本次放射性钾元素网格数据的网格单元大小为0.00039074度（约40米），展示了2021年科巴尔磁法与放射性测量调查中的钾元素浓度分布，单位为百分比（%）。本网格数据由新南威尔士州政府于2021年采集，原始数据总长度达53617测线公里，测线间距为200米，航空测量地形离地高度为60米。