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

  title={Seismological evidence for differential rotation of the Earth's inner core},
  author={Xiaodong Song and Paul G. Richards},
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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Seismological Studies on the Deep Interiors of the Earth Viewed from the Polar Region

  • M. Kanao
  • Geology
    Polar Seismology - Advances and Impact
  • 2018
Seismological studies on the deep interiors of the Earth (depth range from the mantle to the inner core) viewed from the polar region have an advantage to promote global geosci-ences, such as for

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Support for anisotropy of the Earth's inner core from free oscillations

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anisotropy of Earth's inner core

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