MRTAS Pipers River totalcount 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 MRTAS Pipers River totalcount grid geodetic has a cell size of 0.0005 degrees (approximately 49m) and shows the terrestrial dose rate of the NETGOLD - Fingal, Pipers River, Mt.Horror, TAS, 1993. The data used to produce this grid was acquired in 1993 by the TAS Government, and consisted of 16797 line-kilometres of data at 200m line spacing and 80m terrain clearance.

辐射测量法（radiometric method，亦称伽马射线能谱法）通过探测地球表层附近的伽马射线自然变化，量化钾（K）、铀（U）及钍（Th）的天然放射性衰变所引发的辐射响应。所采集的数据将通过标准流程进行预处理，以确保记录的响应仅源自地下岩石的放射性辐射。经处理得到的数据集可通过解译，揭示地下地质构造特征。经处理的数据将由GA地球物理学家开展质量校验，确保GA发布的最终数据符合应用需求。陆地剂量率网格通过滤波后的钾、铀、钍网格的线性组合生成。随后对该网格施加低通滤波处理，得到滤波后的陆地剂量率网格。本MRTAS派珀斯河总计数大地测量网格的单元尺寸为0.0005度（约49米），展示了1993年塔斯马尼亚州（TAS）NETGOLD项目中芬加尔、派珀斯河与恐怖山区域的陆地剂量率分布。该网格的原始数据由塔斯马尼亚州政府于1993年采集，数据覆盖总长度达16797线公里，测线间距为200米，采集时地形离地高度为80米。