Laverton 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 87m) and shows potassium element concentration of the Laverton, WA 1992 in units of percent (or %). The data used to produce this grid was acquired in 1992 by the WA Government, and consisted of 10225 line-kilometres of data at 400m line spacing and 60m terrain clearance.

辐射测量法，亦称伽马射线能谱法，可测量地球表面附近探测到的伽马射线自然变化，该变化源于钾（K）、铀（U）及钍（Th）的自然放射性衰变。所采集的数据将通过标准流程处理，以确保记录的响应仅源自地下岩石。经处理后生成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验，以确保GA发布的最终数据符合使用要求。本次发布的辐射测量钾元素网格数据，单元尺寸为0.00083度（约87米），展示了1992年西澳大利亚州莱弗顿（Western Australia，WA）区域的钾元素浓度分布，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1992年采集，总测线长度达10225线公里，测线间距为400米，航测离地高度为60米。