Bendigo 100k uranium 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 uranium grid has a cell size of 0.00042 degrees (approximately 42m) and shows uranium element concentration of the Bendigo, Vic, 1994 (GSV2688) in units of parts per million (or ppm). The data used to produce this grid was acquired in 1994 by the VIC Government, and consisted of 53660 line-kilometres of data at a line spacing between 200m and 400m, and 100m terrain clearance.

放射性测量法（radiometric method，又称伽马能谱法（gamma-ray spectrometric method））通过探测地表附近的伽马射线自然变化，测量由钾（K）、铀（U）与钍（Th）的天然放射性衰变所产生的伽马射线信号特征。所采集的数据将通过标准化流程进行处理，以确保所记录的辐射响应仅源于地下岩石。经处理得到的数据集可通过地质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，以确保GA发布的最终数据满足实际应用需求。
该铀放射性测量格网（radiometric uranium grid）的单元尺寸为0.00042度（约合42米），展示的是1994年维多利亚州本迪戈地区（Bendigo, Vic, 1994，编号GSV2688）的铀元素浓度数据，单位为百万分比（ppm）。用于制作该格网的数据由维多利亚州政府于1994年采集，总测线长度达53660测线公里，测线间距介于200米至400米之间，采集时的离地高度为100米。