MRTAS Western Tasmania ppm uranium 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 uranium grid has a cell size of 0.00042 degrees (approximately 41m) and shows uranium element concentration of the Western Tasmania, Tas, 2001 (WTRMP Area C) in units of parts per million (or ppm). The data used to produce this grid was acquired in 2001 by the TAS Government, and consisted of 44149 line-kilometres of data at 200m line spacing and 80m 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，此类变化源自钾（K）、铀（U）与钍（Th）的天然放射性衰变。所采集的数据将通过标准流程进行处理，以确保记录到的响应仅源于地下岩石。经处理得到的数据集可通过解译揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量核查，以确保GA发布的最终数据符合使用要求。
本放射性测量铀格网的像元大小为0.00042度（约41米），展示了2001年塔斯马尼亚州西部（塔斯，WTRMP C区）的铀元素浓度，单位为百万分比（parts per million，即ppm）。本格网所用数据由塔斯马尼亚州政府（TAS Government）于2001年采集，总测线长度达44149公里，测线间距为200米，飞行离地高度为80米。