Southern McArthur Basin Gravity p201381 Complete Spherical Cap Bouguer First Vertical Derivative

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 Southern McArthur Basin Gravity p201381 Complete Spherical Cap Bouguer First Vertical Derivative is the first vertical derivative of the complete spherical cap Bouguer anomaly grid for the Southern McArthur Basin Gravity Survey 2013 (P201381). This gravity survey was acquired under the project No. 201381 for the geological survey of NT. The grid has a cell size of 0.00735 degrees (approximately 800m). A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid. A total of 6278 gravity stations at a spacing between 2000m and 4000m were acquired to produce this grid.