ANALYSIS OF THE LOS GRAVITY-DATA SET FROM CYCLE-4 OF THE MAGELLAN PROBE AROUND VENUS

The new line-of-sight gravity data set from cycle 4 of the Magellan spacecraft around Venus is analyzed, and its usefulness for geodetic and geophysical purposes is assessed. These data contain large low-frequency biases, which are estimated by comparison with synthetic data computed from a harmonic model of the gravity field. With the corrected data set, the noncentral part of the radial gravity field at the surface over Eistla Regio and the west part of Aphrodite Terra, with a 1 degrees x 1 degrees resolution, is calculated. (C) 1994 Academic Press, Inc.