Broken Hill Detail 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 Broken Hill N.S.W, 1994 in units of percent (or %). The data used to produce this grid was acquired in 1994 by the NSW Government, and consisted of 56310 line-kilometres of data at a line spacing between 100m and 400m, and 60m terrain clearance.

放射性测量法（radiometric method），或称伽马能谱法（gamma-ray spectrometric method），通过探测地表附近的伽马射线自然变化，对由钾（potassium, K）、铀（uranium, U）与钍（thorium, Th）的天然放射性衰变产生的伽马射线进行测量。所采集的数据将通过标准流程处理，以确保记录的响应仅源于地下岩石。最终得到的数据集可通过解译揭示地下地质结构。经处理的数据会由GA地球物理学家开展质量核查，确保GA发布的最终数据符合使用要求。
本次的放射性钾元素栅格数据集，单元格大小为0.00021度（约21米），展示了1994年新南威尔士州布罗肯希尔（Broken Hill N.S.W）地区的钾元素浓度，单位为百分比（%）。用于生成该栅格数据集的数据由新南威尔士州（NSW）政府于1994年采集，总测线长度达56310线公里，测线间距介于100米至400米之间，地形离地高度为60米。