Measurements of electric anisotropy due to solidification texturing and the implications for the Earth's inner core

  title={Measurements of electric anisotropy due to solidification texturing and the implications for the Earth's inner core},
  author={Michael I. Bergman},
  • M. Bergman
  • Published 4 September 1997
  • Geology, Materials Science
  • Nature
1-4 suggest that the Earth's solid inner core is elastically anisotropic, with the fast direction nearly parallel to the rotation axis. Compressional body- wave data also suggest that the anisotropy increases with turning depth, with a maximum anisotropy of 3-4% (refs 5-7). Here I propose that the inner core's elastic anisotropy and the depth dependence of the anisotropy may be due to solidification textur- ing that results from the dendritic growth of iron crystals. I demonstrate through… 

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