Are post-glacial rebound model predictions consistent with the global space-geodetic secular velocity field?

On global scales the present-day secular velocity field of the Earth’s surface is dominated by two processes, namely plate tectonics and post-glacial isostatic rebound. Over the last 15 years, various empirical plate motion models have been derived and constrained by modern space-geodetic observations. Most of these models describe the global horizontal motions for a set of rigid plates distributed over the Earth’s spherical surface. For the present-day post-glacial rebound signal (PGS), predictions of both the vertical and horizontal velocity fields are available from geophysical models that have been calibrated against a set of observations including local sea level changes over the last 20,000 years, changes in length of day, and gravity field anomalies. Increasingly, space-geodetic observations of the surface velocities are also used to constrain these models on regional scales.