Earth's center of mass small movements

Geocenter moves projected on the Earth's surface, depending on the months. The displacement of the geometrical center of the surface with respect to the center of mass is mainly seasonal (credit Cnes)Geocenter moves projected on the Earth's surface, depending on the months. The displacement of the geometrical center of the surface with respect to the center of mass is mainly seasonal
Geocenter movements at their "real" scale, i.e. a few millimeters. This, projected on the surface draw an ellipse in the plane at 93°E