Elastic anisotropy of Earth's inner core.

@article{Belonoshko2008ElasticAO,
  title={Elastic anisotropy of Earth's inner core.},
  author={Anatoly B. Belonoshko and Natalia V. Skorodumova and Anders Rosengren and B{\"o}rje Johansson},
  journal={Science},
  year={2008},
  volume={319 5864},
  pages={797-800}
}
Earth's solid-iron inner core is elastically anisotropic. Sound waves propagate faster along Earth's spin axis than in the equatorial plane. This anisotropy has previously been explained by a preferred orientation of the iron alloy hexagonal crystals. However, hexagonal iron becomes increasingly isotropic on increasing temperature at pressures of the inner core and is therefore unlikely to cause the anisotropy. An alternative explanation, supported by diamond anvil cell experiments, is that… CONTINUE READING

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Zhur . Eksp . Teor

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