Our true polar wander (TPW) modeling studies are based on an understanding of the relationship between tectonic activity and paleogeoid heights, assuming minimal direct influence of lithospheric plate movements on their change, but a significant indirect influence through mantle convection over a geologic time of 540 Ma. To determine the sliding correlation coefficients between geoid heights and lithospheric surface heights, we used data for 1ºx1º trapezoids from the EGM2008 model and topographic heights from ETOPO1. By extrapolating the modern correlation model to past geologic epochs, we investigated the dynamic paleogeographic evolution and its impact on the geoid structure. On the interval from the modern epoch to 540 Ma with an interval of 5 Ma, using paleoDEM and paleogeoid models, we obtained results indicating secular movement of the Earth's poles with maximum pole displacement along the meridian due to continental drift (375 km) and convective mass transfer (29 m).
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