GSWA Eucla Basin 6 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 0.00042 degrees (approximately 43m) and shows potassium element concentration of the Eucla Coast, WA, 2009 (Eucla Basin 6) in units of percent (or %). The data used to produce this grid was acquired in 2009 by the WA Government, and consisted of 122145 line-kilometres of data at a line spacing between 200m and 400m, and 50m terrain clearance.辐射法，亦称伽马能谱法（gamma-ray spectrometric method），通过探测地表附近的伽马射线自然变化，来反映钾（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流程进行处理，以确保记录的辐射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校验，以确保GA发布的最终数据满足使用需求。本次的辐射法钾元素栅格数据栅格单元尺寸为0.00042度（约合43米），展示了2009年西澳大利亚州尤克拉海岸（尤克拉盆地6区）的钾元素浓度分布，单位为百分比（%）。本栅格数据所用的原始数据由西澳大利亚州政府于2009年采集，总测线长度达122145测线公里，测线间距介于200米至400米之间，飞行离地高度为50米。