GSQ Westmoreland 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 90m) and shows uranium element concentration of the Westmoreland, Qld, 2007 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2006 by the QLD Government, and consisted of 60570 line-kilometres of data at 400m line spacing and 60m terrain clearance.

放射性测量法（radiometric method），亦称伽马能谱法（gamma-ray spectrometric method），可探测地表附近的伽马射线自然变化，该变化源于钾（K）、铀（U）与钍（Th）的自然放射性衰变。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自地下岩石。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校验，以确保GA发布的最终数据符合使用需求。本放射性铀测量网格的格网分辨率为0.00083度（约合90米），展示了2007年昆士兰州（QLD）韦斯特摩兰（Westmoreland）地区的铀元素浓度，单位为百万分比（parts per million，即ppm）。本网格所用数据由昆士兰州政府（QLD Government）于2006年采集，总测线里程达60570线公里，测线间距为400米，地形离地高度为60米。