Progress and Problems in Near Surface Gravity

The paper describes three applications of near-surface gravity: (i) an attempt to estimate in-situ weathering of a dimension stone deposit, (ii) improvements in 3D gravity inversion of overburden thickness and (iii) new results of monitoring the subsidence and density of a landfill. The examples demonstrate the state-of-art in near-surface gravity: mean error of gravity measurements ±0.010 mGal or better, advanced modelling techniques and a demand for highly accurate terrain models.