p200750 PACE Northern Olympic Domain Gravity slab Bouguer 1vd

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 p200750 PACE Northern Olympic Domain Gravity slab Bouguer 1vd is a first vertical derivative of the Bouguer anomaly grid for the 2007 PACE Northern Olympic Domain Gravity Survey, SA (P200750) survey. This gravity survey was acquired under the project No. 200750 for the geological survey of SA. The grid has a cell size of 0.00185 degrees (approximately 192m). A total of 38881 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引发的微小重力场扰动。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由地下岩石引起。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。处理后的数据需经澳大利亚地质调查局（Geoscience Australia，简称GA）的地球物理学家开展质量核查，以确保GA发布的最终数据满足使用需求。本数据集p200750 PACE北奥林匹克域重力布格1vd，为2007年PACE北奥林匹克域重力测量（南澳大利亚州，编号P200750）的布格异常（Bouguer anomaly）网格一阶垂直导数产品。本次重力测量是为开展南澳大利亚州（South Australia，简称SA）地质调查，于编号200750的项目框架下实施的。该网格的单元尺寸为0.00185度（约合192米）。为生成原始网格，本次测量共获取了38881个重力测点数据。通过快速傅里叶变换（Fast Fourier Transform，简称FFT）对原始网格进行处理，以计算得到一阶垂直导数网格。