Seismic anisotropy of the Earth's inner core resulting from flow induced by Maxwell stresses

  title={Seismic anisotropy of the Earth's inner core resulting from flow induced by Maxwell stresses},
  author={Shun‐ichiro Karato},
  • S. Karato
  • Published 23 December 1999
  • Geology
  • Nature
Seismological observations indicate that the inner core of the Earth is elastically anisotropic. Anisotropic structures are likely to be formed by dynamic processes and therefore such observations have the potential to provide constraints on flow in the inner core and on the geodynamo itself. But in addition to the difficulties in estimating the relevant physical properties of iron under inner-core conditions, even the macroscopic processes responsible for generating seismic anisotropy in this… 

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  • P. OlsonG. Glatzmaier
  • Physics, Geology
    Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 1996
Numerical calculations of finite amplitude magnetoconvection in a rotating spherical shell are used to investigate the thermal coupling of the Earth’s core to the mantle. From the observed

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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