Possible heterogeneity of the Earth's core deduced from PKIKP travel times

@article{Poupinet1983PossibleHO,
  title={Possible heterogeneity of the Earth's core deduced from PKIKP travel times},
  author={G. Poupinet and R. Pillet and A. Souriau},
  journal={Nature},
  year={1983},
  volume={305},
  pages={204-206}
}
  • G. Poupinet, R. Pillet, A. Souriau
  • Published 1983
  • Geology
  • Nature
  • The core of the Earth is usually described by spherically-symmetrical velocity models. The core is made of two main spherical layers: the fluid outer core with a radius close to 3,480 km and a P-velocity increasing with depth from 8 km s−1 to 10.3 km s−1, and the solid inner core with a radius of 1,220 km and a P-velocity close to 11 km s−1 (refs 1, 2). Station residuals of the seismic core phase PKIKP have been computed for 400 seismological observatories worldwide using 5 yr of the… CONTINUE READING
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