Mt Isa 2006, Area A (P200640), Bouguer 1VD 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 Mt Isa 2006, Area A (P200640), Bouguer 1VD grid is a first vertical derivative of the Bouguer anomaly grid for the Mt Isa 2006, Area A (P200640) survey. This gravity survey was acquired under the project No. 200640 for the geological survey of QLD. The grid has a cell size of 0.00372 degrees (approximately 400m). A total of 6575 gravity stations were acquired to produce the original grid. A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid.重力数据用于监测地球表层下方岩石密度变化所引发的微小重力场变动。所采集的原始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的影响。经处理后生成的数据集可通过解译，揭示地下地质构造特征。处理后的数据将由GA地球物理学家开展质量核查，以保障GA发布的最终数据符合使用需求。 本次芒特艾萨2006年A区（P200640）布格一阶垂直导数网格（Bouguer 1VD grid），是针对芒特艾萨2006年A区（P200640）勘探项目的布格异常网格所计算得到的一阶垂直导数成果。该重力勘探以项目编号200640立项，由昆士兰州地质调查局组织实施。该网格的单元尺寸为0.00372度（约合400米）。为生成原始网格，本次勘探共布设了6575个重力测点。研究人员通过对原始网格应用快速傅里叶变换（Fast Fourier Transform, FFT）流程，计算得到该一阶垂直导数网格。