GSQ Cooper Basin East pctk 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 87m) and shows potassium element concentration of the Cooper Basin East, Qld, 2008 in units of percent (or %). The data used to produce this grid was acquired in 2008 by the QLD Government, and consisted of 216336 line-kilometres of data at 400m line spacing and 60m terrain clearance.

放射性测量法（radiometric method，又称伽马射线能谱法（gamma-ray spectrometric method））可检测地球表面附近的伽马射线自然变化，该变化源于钾（K）、铀（U）及钍（Th）的自然放射性衰变。所采集的数据将通过标准流程处理，以确保记录的响应仅由地下岩石产生。经处理后得到的数据集可通过解译，用以揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量检查，以确保GA发布的最终数据符合使用要求。本放射性钾元素栅格数据的栅格单元尺寸为0.00083度（约87米），展示了2008年库珀盆地东部、昆士兰州（Qld）的钾元素浓度分布，单位为百分比（%）。本栅格数据所用的原始数据由昆士兰州政府于2008年采集，总测线长度达216336线公里，测线间距为400米，航测离地高度为60米。