Bridging the gap between the deep Earth and lithospheric gravity field

Barend Cornelis Root1, Joerg Ebbing2, Zdenek Martinec3 and Wouter van der Wal1, (1)Delft University of Technology, Delft, Netherlands, (2)University of Kiel, Kiel, Germany, (3)Dublin Institute for Advanced Studies, School of Cosmic Physics, Dublin, Ireland