IJGInternational Journal of Geosciences2156-8359Scientific Research Publishing10.4236/ijg.2014.51008IJG-42202ArticlesEarth&Environmental Sciences Non-Rigid Rotation, Global Geodynamics and Free Nutation hehPan1*Pan Filter Technology, Saratoga, USA* E-mail:cpan1@ix.netcom.com2101201405016376November 1, 2013December 3, 2013 January 2, 2014© Copyright 2014 by authors and Scientific Research Publishing Inc. 2014This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/

The rotation of the physical Earth not only obeys the law of conservation of angular momentum but follows also the three-finger rule of the right-handed system. The reference frame in the Earth is most essential. The generalized Eulerian equation of motion or the Liouville equation is to represent global geodynamics in general, which is examined directly through the observation of the Earth’s rotation and surface motions, with no additional assumptions after fundamental physics. Rotational acceleration, polar motion, plate tectonics, and seismicity observed on the Earth’s surface indicate that the Earth’s angular momentum is perturbed and adjusting independently of external torques. (For more information,please refer to the PDF.)

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