Secular variation of Earth's gravitational harmonic J2 coefficient from Lageos and nontidal acceleration of Earth rotation

@article{Yoder1983SecularVO,
  title={Secular variation of Earth's gravitational harmonic J2 coefficient from Lageos and nontidal acceleration of Earth rotation},
  author={Charles Finney Yoder and J. G. Williams and Jean O. Dickey and Bob E. Schutz and R. J. Eanes and Byron D. Tapley},
  journal={Nature},
  year={1983},
  volume={303},
  pages={757-762}
}
Analysis of 5½ years of Lageos satellite range data reveal significant residual nodal signatures: an acceleration and annual and semiannual periods. These signatures primarily reflect variations in the zonal gravitational harmonic J2 coefficient and hence the polar moment of inertia. The implied decrease of \[Jdot]2=−3×10−11 yr−1 is consistent with both historical observations of the nontidal acceleration of the Earth's rotation and models of viscous rebound of the solid Earth from the decrease… 
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  • M. Rochester
  • Geology
    Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
  • 1984
Over the last decade considerable progress has been made in closing the gap between geophysical theory and the observed changes in the Earth's spin rate and polar motion, which are affected by the…
...

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