Terrain effect of 1: 50000 gravity prospecting result in mountainous region is removed by respectively using slope-top trihedral prism model and rectangular prism model in near, mid and far areas.

• 分别用斜顶三棱柱体及方柱体模型分近、中、远区对某山区1：5万高精度重力勘探成果进行地形改正。用常规方法对地改后的布格重力异常进行处理效果不佳。