Seismological evidence for differential rotation of the Earth's inner core

@article{Song1996SeismologicalEF,
  title={Seismological evidence for differential rotation of the Earth's inner core},
  author={Xiaodong Song and P. G. Richards},
  journal={Nature},
  year={1996},
  volume={382},
  pages={221-224}
}
  • Xiaodong Song, P. G. Richards
  • Published 1996
  • Geology, Computer Science
  • Nature
  • The travel times of seismic waves that traverse the Earth's inner core show a small but systematic variation over the past three decades. This variation is best explained by a rotation of the inner core that moves the symmetry axis of its known seismic anisotropy. The inferred rotation rate is on the order of 1° per year faster than the daily rotation of the mantle and crust. 
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