Bangemall Basin 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 0.001 degrees (approximately 106m) and shows potassium element concentration of the Bangemall Basin, WA, 1995 in units of percent (or %). The data used to produce this grid was acquired in 1995 by the WA Government, and consisted of 144720 line-kilometres of data at 500m line spacing and 60m terrain clearance.

放射性测量法（radiometric method，亦称伽马能谱法）可检测地球表面附近的伽马射线自然变化，该变化源于钾（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来自地下岩石的辐射。经处理得到的数据集可通过解译，用以揭示地下地质构造。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。本次的放射性钾元素网格数据单元尺寸为0.001度（约合106米），展示了1995年西澳大利亚州（Western Australia，WA）班戈尔盆地（Bangemall Basin）的钾元素浓度分布，单位为百分比（%）。用于生成该网格的数据由西澳大利亚州政府于1995年采集，总测线长度达144720线千米，测线间距为500米，采集时的地形离地高度为60米。