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

@article{Tromp1993SupportFA,
  title={Support for anisotropy of the Earth's inner core from free oscillations},
  author={J. Tromp},
  journal={Nature},
  year={1993},
  volume={366},
  pages={678-681}
}
  • J. Tromp
  • Published 1993
  • Physics
  • Nature
  • IN 1983, Poupinet et al.1 observed that compressional seismic waves traversing the inner core along a trajectory parallel to the Earth's rotation axis arrive faster than the same (PKIKP) waves travelling in the equatorial plane. They interpreted this observation as revealing prolate topography of the inner-core boundary. In 1986, Morelli et al.2 and Woodhouse et al.3 suggested that inner-core anisotropy could explain both the travel-time observations and the anomalous splitting of some of the… CONTINUE READING
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