GSNSW Exploration NSW Area Y Murray Riverina potassium 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 potassium grid has a cell size of 0.00098 degrees (approximately 100m) and shows potassium element concentration of the Murray - Riverina, NSW, 2003 (Area Y) in units of percent (or %). The data used to produce this grid was acquired in 2003 by the NSW Government, and consisted of 160619 line-kilometres of data at 400m line spacing and 60m terrain clearance.

辐射测量法（radiometric method，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，来表征钾（K）、铀（U）及钍（Th）的自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流程处理，以确保记录的响应仅来自地下岩石的辐射。经处理得到的数据集可通过解译，揭示地下地质构造。经处理的数据将由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要求。
本辐射测量钾元素网格的栅格单元尺寸为0.00098度（约合100米），展示了2003年新南威尔士州（New South Wales，NSW）墨累-里弗赖纳（Murray-Riverina，Y区域）的钾元素浓度，单位为百分比（%）。
本网格所用数据由新南威尔士州政府于2003年采集，总测线长度达160619线公里，测线间距为400米，地形离地高度为60米。