The effects of topographic masses on satellite gradiometric data are

large and in order to reduce the magnitude of these effects some compensation

mechanisms should be considered. Herewe use the isostatic hypotheses

of Airy–Heiskanen and the recent Vening Meinesz–Moritz for compensating

these effects and to smooth the data prior to their downward continuation

to gravity anomaly. The second-order partial derivatives of extended

Stokes’ formula are used for the continuations over a topographically rough

territory like Persia. The inversions are performed and compared based on

two schemes of the remove-compute-restore technique and direct downward

continuation. Numerical results show that the topographic-isostatic effect

based onVening Meinesz–Mortiz’s hypothesis smoothes the data better than

that based on Airy–Heiskanen’s hypothesis. Also the quality of inversions

of the smoothed data by this mechanism is twice better than that of the nonsmoothed

ones.