INV2P5DSB程序，已经发展到同时预测2.5维的沉积盆地的深度与从重力异常得到的区域背景。基地界面上的深度抛物线型变反映了密度差异。-A program, INV2P5DSB, has been developed to simultaneously estimate the depth of a 2.5-D sedimentary basin and

regional background　observed gravity anomalies. The density contrast is assumed to be varying parabolically with

depth above the basement interfac