Ararat Ballarat 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 0.00083 degrees (approximately 83m) and shows potassium element concentration of the Ararat-Ballarat merge, 1990-1992 in units of percent (or %). The data used to produce this grid was acquired in 1990 by the VIC Government, and consisted of 51328 line-kilometres of data at a line spacing between 200m and 400m, and 100m terrain clearance.

放射测量法（radiometric），又称伽马射线能谱法（gamma-ray spectrometric），通过测量地球表面附近探测到的伽马射线自然变化量，来反映由钾（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流程进行处理，以确保记录到的响应仅源于地下岩石。经处理后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验，确保GA发布的最终数据符合使用要求。本放射测量钾元素网格的单元尺寸为0.00083度（约83米），展示了1990至1992年亚拉腊-巴拉瑞特合并区域的钾元素浓度，单位为百分比（%）。用于生成该网格的数据由VIC州政府于1990年采集，总测线长度达51328线公里，测线间距介于200米至400米之间，地形离地高度为100米。