Webb Gravity Survey (P200660), simple Bouguer grid

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 Webb Gravity Survey (P200660), simple Bouguer grid is a complete Bouguer anomaly grid for the Webb Gravity Survey (P200660). This gravity survey was acquired under the project No. 200660 for the geological survey of WA. The grid has a cell size of 0.0047 degrees (approximately 502m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 4092 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由地下岩石产生。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验，以确保GA发布的最终数据符合使用要求。
本次韦伯重力调查（P200660）的简易布格网格，为该调查专属的完整布格异常网格。本次重力调查为西澳大利亚州（WA）地质调查项目编号200660项下所采集。该网格的单元尺寸为0.0047度（约合502米）。数据单位为微米每二次方秒（um/s²），亦称为‘重力单位’（gravity units，缩写gu）。本次网格的生成共采集了4092个重力测点。