GSWA Crossland Noonkanbah East Canning 1 GA Canning Basin Onshore 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 0.00083 degrees (approximately 90m) and shows potassium element concentration of the Crossland-Noonkanbah-East Canning Onshore merge, 2007-2009 in units of percent (or %). The data used to produce this grid was acquired in 2007 by the WA Government, and consisted of 197185 line-kilometres of data at a line spacing between 400m and 800m, and 60m terrain clearance.

放射性测量法（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，测量由钾（K）、铀（U）和钍（Th）自然放射性衰变产生的伽马射线信号。所采集的数据将通过标准化流程处理，以确保记录的响应仅源于地下岩石的放射性衰变。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核查，以确保GA发布的最终数据符合使用要求。本放射性钾元素格网的单元格尺寸为0.00083度（约90米），展示了2007-2009年Crossland-Noonkanbah-East Canning陆上合并区的钾元素浓度分布，单位为百分比（%）。本格网所用数据由西澳大利亚州政府（WA Government）于2007年采集，总测线长度达197185线公里，测线间距介于400米至800米之间，地形离地高度为60米。