Fig. 6

Synthetic gravity anomaly and gravity gradient anomaly of a complex model contains two prisms with the center depths are 10 km and 15 km, respectively. a 3D view of the model; b gravity anomaly; c gravity gradient component \({f}_{zx}\); d gravity gradient component \({f}_{zy}\). The black rectangle are the locations of the prisms in the horizontal plan, and the white line is the cross section for Fig. 7