GSNSW Batemans Bay Narooma 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 0.00049 degrees (approximately 50m) and shows potassium element concentration of the Batemans Bay-Narooma, NSW, 1998 in units of percent (or %). The data used to produce this grid was acquired in 1998 by the NSW Government, and consisted of 7792 line-kilometres of data at 250m line spacing and 60m terrain clearance.

放射性测量法（又称伽马射线能谱法）可探测地表附近的伽马射线自然变化，该变化源于钾（K）、铀（U）以及钍（Th）的自然放射性衰变。所采集的数据将通过标准流程进行处理，以确保记录的响应仅源自地下岩石。经处理后得到的数据集可被解译，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。本放射性钾元素栅格的像元大小为0.00049度（约50米），展示了1998年新南威尔士州（NSW）贝特曼斯湾-纳鲁马地区的钾元素浓度，单位为百分比（%）。本栅格所用数据由新南威尔士州政府于1998年采集，数据覆盖7792线公里，测线间距为250米，飞行离地高度为60米。