GSQ Maryborough Gympie ppm 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 0.00083 degrees (approximately 88m) and shows uranium element concentration of the Maryborough, Qld, 2005 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2005 by the QLD Government, and consisted of 51044 line-kilometres of data at 400m line spacing and 80m terrain clearance.

放射性伽马能谱测量法（radiometric/gamma-ray spectrometric method）通过测量地表附近检测到的伽马射线自然变化，来反映由钾（K）、铀（U）及钍（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化流程进行处理，以确保记录的响应仅来源于地下岩石的辐射。经处理得到的数据集可通过地质解译，揭示地下地质构造特征。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。本次放射性铀元素栅格数据的像元大小为0.00083度（约88米），展示了2005年昆士兰州（Qld）马里伯勒（Maryborough）地区的铀元素浓度，单位为百万分比（parts per million，ppm）。该栅格数据所用的原始数据集由昆士兰州政府于2005年采集完成，总测线覆盖长度达51044线公里，测线间距为400米，地形离地高度为80米。