GSNSW Exploration NSW Area K Peel total count 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. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered terrestrial dose rate grid.This GSNSW Exploration NSW Area K Peel total count grid geodetic has a cell size of 0.00048 degrees (approximately 50m) and shows the terrestrial dose rate of the NSW DMR, Discovery 2000 Area K, Peel (Inverell,Manilla), NSW, 1998. The data used to produce this grid was acquired in 1998 by the NSW Government, and consisted of 61165 line-kilometres of data at 250m line spacing and 60m terrain clearance.

辐射测量法（radiometric, or gamma-ray spectrometric method）通过检测地球表面附近的伽马射线自然波动，以反映由钾（K）、铀（U）与钍（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，确保记录的响应信号仅源于地下岩石的辐射。经处理得到的数据集可通过解译，揭示地下地质构造特征。处理后的数据将由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。地面剂量率网格（terrestrial dose rate grid）由经过滤波处理的钾、铀、钍网格线性组合得到，随后对该网格施加低通滤波器（low pass filter），生成滤波后的地面剂量率网格。本数据集为GSNSW勘探项目下的新南威尔士州K Peel区域总计数大地测量网格，其网格单元尺寸为0.00048度（约50米），展示了1998年新南威尔士州皮尔（因弗雷尔、马尼拉）区域、NSW DMR Discovery 2000 K区域的地面剂量率分布。该网格的制作数据由新南威尔士州政府于1998年采集，总计包含61165线公里的测量数据，测线间距为250米，地形离地高度为60米。