GSWA Merredin Bruce Rock North uranium grid geodetic

This GSWA Merredin Bruce Rock North uranium grid geodetic is an airborne-derived radiometric uranium window countrate grid for the Merredin-Bruce Rock, WA, 1997 survey. 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 uranium (K), uranium (U) and uranium (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 GSWA Merredin Bruce Rock North uranium grid geodetic has a cell size of 0.0005 degrees (approximately 51m). The data are in units of counts per second (or cps). The data used to produce this grid was acquired in 1997 by the WA Government, and consisted of 27533 line-kilometres of data at 150m line spacing and 50m terrain clearance.

本数据集为西澳大利亚地质调查局（Geological Survey of Western Australia，GSWA）1997年在西澳大利亚（Western Australia，简称WA）默里丁-布鲁斯罗克（Merredin-Bruce Rock）区域开展的航空放射性测量项目所生成的大地坐标系铀计数率格网数据。放射性测量法，亦称伽马射线能谱法，通过探测地表附近的伽马射线，量化钾（K）、铀（U）和钍（Th）自然放射性衰变所引发的伽马射线自然变化。采集所得数据经标准化流程处理，以确保记录的辐射响应仅来源于地下岩石的放射性衰变。处理后得到的数据集可通过解译，揭示地下地质构造特征。经处理的数据由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使用需求。
本GSWA默里丁-布鲁斯罗克北部大地坐标系铀格网数据的格网单元尺寸为0.0005度（约51米）。该数据的单位为每秒计数（counts per second，简称cps）。本格网数据基于西澳大利亚州政府1997年采集的航空放射性测量数据生成，该数据集包含27533测线公里的测量数据，测线间距为150米，飞行离地高度为50米。