True polar wander (TPW) occurs because the Earth’s spin axis remains always very nearly aligned with its axis of maximum non-hydrostatic moment of inertia—the short axis of the non-hydrostatic ...
The study of polar motion and Earth's rotation dynamics encompasses the investigation of subtle shifts in the orientation of the planet's rotation axis relative to its crust. These motions are ...
The Earth wobbles. Like a spinning top touched in mid-spin, its rotational axis fluctuates in relation to space. This is partly caused by gravitation from the sun and the moon. At the same time, the ...
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