GSSA Warrina Uranium Grid Geodetic

This GSSA Warrina Uranium Grid Geodetic is an airborne-derived radiometric uranium window countrate grid for the Warrina Airborne Magnetic Radiometric and DEM Survey, SA, 2017 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 GSSA Warrina Uranium Grid Geodetic has a cell size of 0.00042 degrees (approximately 44m). The data are in units of counts per second (or cps). The data used to produce this grid was acquired in 2017 by the SA Government, and consisted of 135932 line-kilometres of data at 200m line spacing and 60m terrain clearance.

本GSSA沃里纳铀测地网格（GSSA Warrina Uranium Grid Geodetic）是针对2017年度南澳大利亚州沃里纳航空磁法-放射性能谱与数字高程模型（DEM）测量项目生成的航空衍生放射性铀窗口计数率网格数据集。放射性能谱法（又称伽马射线能谱法）通过探测地球表面附近的伽马射线自然变化，反映由钾（K）、铀（U）与钍（Th）的天然放射性衰变产生的辐射信号。所采集的数据经标准流程处理，以确保记录的辐射响应仅源自地下岩石的放射性贡献。经处理得到的数据集可通过地质解译揭示地下地质构造。该处理后的数据由澳大利亚地球科学局（Geoscience Australia, GA）的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需求。本GSSA沃里纳铀测地网格的单元格尺寸为0.00042度（约合44米）。该数据的单位为每秒计数（counts per second, 简称cps）。本网格所用数据由南澳大利亚州政府于2017年采集完成，总测线长度达135932线千米，测线间距为200米，飞行离地高度为60米。