Influence of distant zones’ weights on value of a topographical reduction is investigated. It is shown that the residual weights located at a distance of 3000 – 5000 kilometers make an essential impact on correction values .When processing gravimetric measurements it is recommended to calculate a full topographical reduction.
(2011) On value and importance of gravitational influence correction of exterior intermediate layer mass. Geodesy and cartography = Geodezia i Kartografia, 72(9), pp. 8-10. (In Russian).