AlbanyFraserNth CompleteSphCapBouguer geodetic

Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. 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 AlbanyFraserNth CompleteSphCapBouguer geodetic is a complete spherical cap Bouguer anomaly grid for the Albany Fraser Gravity Survey (P201062). This gravity survey was acquired under the project No. 201062 for the geological survey of WA. The grid has a cell size of 0.005 degrees (approximately 519m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 9258 gravity stations were acquired to produce this grid.

重力数据用于测量地球表层下方岩石密度变化所引发的微小重力变化。所采集的数据将通过标准流程进行处理，以确保记录得到的响应仅源于地下岩石的影响。经处理得到的数据集可通过解译，揭示地下地质构造。经处理的数据会由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。本奥尔巴尼-弗雷泽北部完整球面帽（spherical cap）布格异常（Bouguer anomaly）测地数据集（AlbanyFraserNth CompleteSphCapBouguer geodetic）为奥尔巴尼-弗雷泽重力测量（项目编号P201062）的完整球面帽布格异常网格。该重力测量是为开展西澳大利亚（WA）地质调查而实施的项目201062项下的工作。该网格的单元格尺寸为0.005度（约合519米）。数据单位为微米每二次方秒（μm/s²），亦称为"重力单位"（gravity units，缩写gu）。本次网格制作共采集了9258个重力测点。