Cooper Basin North Complete Gravity Bouguer Anomaly 1VD 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 Cooper Basin North Complete Gravity Bouguer Anomaly 1VD geodetic is a complete Bouguer anomaly grid for the Cooper Basin North Gravity Survey, Queensland 2007 (P200701). A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid. This gravity survey was acquired under the project No. 200701 for the geological survey of QLD. The grid has a cell size of 0.0075 degrees (approximately 796m). A total of 3550 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引发的微小重力场变化。所采集的数据将通过标准化流程进行处理，以确保记录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，揭示地下地质构造特征。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。本次发布的库珀盆地北部完整重力布格异常1VD大地测量数据集，为2007年昆士兰州库珀盆地北部重力调查（项目编号P200701）的完整布格异常网格数据。研究人员对原始网格应用快速傅里叶变换（Fast Fourier Transform, FFT）流程，以计算第一垂直导数网格。本次重力调查为昆士兰州200701号地质调查项目的组成部分。该网格的单元尺寸为0.0075度（约合796米）。本次网格共依托3550个重力测点的观测数据构建完成。