Galilee Complete Spherical Cap 1vd geodetic

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 Galilee Complete Spherical Cap 1vd geodetic is the first vertical derivative of the complete spherical cap Bouguer anomaly grid for the Galilee Gravity Survey (P201040). This gravity survey was acquired under the project No. 201040 for the geological survey of QLD. The grid has a cell size of 0.007 degrees (approximately 748m). A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid. A total of 6523 gravity stations at 4000m spacing were acquired to produce this grid.

重力数据用于测量因地球表层下方岩石密度变化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源于地下岩石的影响。经处理后得到的数据集可用于解译，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查，以确保GA发布的最终数据满足使用需求。
本次加利利完整球帽1vd大地测量数据集，是加利利重力测量项目（P201040）对应的完整球帽布格异常（Bouguer anomaly）网格的一阶垂直导数数据。本次重力测量是为开展昆士兰州地质调查，依据项目编号201040实施的。该网格的单元尺寸为0.007度（约748米）。本次研究对原始网格应用快速傅里叶变换（Fast Fourier Transform, FFT）流程，以计算得到该一阶垂直导数网格。为生成该网格，共布设了6523个间距为4000米的重力测点。