isostatic residual gravity anomaly 2 Airy-Heiskanen model 1 Bouguer gravity anomaly 1 Bouguer gravity reduction 1 Dnieper-Donets Basin 1 GNSS-leveling 1 GNSS-нівелювання 1 Pratt-Hayford model 1 Southeast Caucasus 1 attenuation 1 boundary of recent activation zone 1 commercial hydrocarbon pool 1 complete Bouguer gravity anomaly 1 density log 1 downward continuation 1 ellipsoid 1 free-air gravity reduction 1 geoid 1 geoid model 1 geoid undulation 1 geologically meaningful 3D density model 1 gravity anomalies 1 gravity anomaly 1 gravity disturbance 1 hartley transform 1 height system 1 isolated density anomaly 1 joint inverse problems solution 1 mantle gravity anomaly 1 normal gravity 1