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

Gravity data measure small changes in gravity due ti changes in the density of rocks beneath the Earth�s surface. The data are collected on geophysical surveys conducted by Commonwealth, State & NT Governments and the private sector.重力数据（gravity data）用于测量地球表面以下岩石密度变化所引起的重力微小变化。这些数据通过联邦、州及北领地政府与私营部门开展的地球物理勘探（geophysical surveys）收集。