Abstract：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. Conventional methods fail to bring good processing result of gravity anomaly which has undergone terrain correction. 2-D apparent depth filtering method is taken，which includes following steps:upward continuation of observed data by analytic way, downward continuation using difference means，repeated upward and downward continuations in several times，and last downward continuation using ,difference means to achieve this filtering. The method has been used to process gravity data in a mountainous region. The processed result has been compared with corresponding seismic data and borehole data to show satisfactory effect.
杨辉, 李明, 王宜昌, 王小牧, 王家林. 复杂地形条件下高精度重力勘探的地质效果[J]. 石油地球物理勘探, 1999, 34(2): 197-203.
YANG Hui, LI Ming, WANG Yi-chang, WANG Xiao-mu, WANG Jia-lin. Geological effect of high-accuracy gravity prospecting in complicated landforms. OGP, 1999, 34(2): 197-203.
