Blackstone Combined Bouguer Anomaly geodetic

Gravity data measures 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 Blackstone Combined Bouguer Anomaly geodetic is a complete Bouguer anomaly grid for the Blackstone WA Gravity Survey (P200663). This gravity survey was acquired under the project No. 200663 for the geological survey of WA. The grid has a cell size of 0.00556 degrees (approximately 585m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 309 gravity stations were acquired to produce this grid.

重力数据用于监测因地球表层下方岩石密度变化而引发的微小重力场变化。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自地下岩石的影响。经处理后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。本次布莱克斯通组合布格异常（Blackstone Combined Bouguer Anomaly）大地测量数据集，是西澳大利亚（WA）布莱克斯通重力测量（项目编号P200663）的完整布格异常网格数据。该重力测量工作由编号为200663的项目发起，用于西澳大利亚（WA）的地质调查。该网格的单元尺寸为0.00556度（约合585米）。数据单位为um/s²，该单位亦被称为"重力单位"（gravity units，简称gu）。本次网格的生成共依托309个重力测点。