Ngururrpa Gravity Survey P201560 Spherical Cap Bouguer Anomaly 267GU

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 Ngururrpa Gravity Survey P201560 Spherical Cap Bouguer Anomaly 267GU is a complete Bouguer anomaly grid for the Ngururrpa Gravity Survey (P201560) survey. This gravity survey was acquired under the project No. 201560 for the geological survey of WA. The grid has a cell size of 0.00466 degrees (approximately 500m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 4965 gravity stations were acquired to produce this grid.

重力数据用于量化地球表层下方岩石密度变化所引发的微小重力场扰动。采集所得数据将通过标准化流程开展处理，以确保记录得到的响应仅源于地下岩石。经处理得到的数据集可通过解译工作，揭示地下地质构造特征。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发布的最终数据满足使用需求。本次发布的Ngururrpa重力勘探P201560球冠布格异常（Spherical Cap Bouguer Anomaly）267GU数据集，为Ngururrpa重力勘探（P201560）项目的完整布格异常格网数据。本次重力勘探为西澳大利亚州（Western Australia，简称WA）地质调查项目编号201560项下的实施工作。该格网的单元尺寸为0.00466度（约合500米）。数据单位为微米每二次方秒（um/s²），亦称为"重力单位"（gravity units，简称gu）。本次格网数据共依托4965个重力测点采集生成。