Solidity of the Inner Core of the Earth inferred from Normal Mode Observations

  title={Solidity of the Inner Core of the Earth inferred from Normal Mode Observations},
  author={Adam M. Dziewoński and Ferhat Gilbert},
SOLIDITY of the inner core was originally inferred on the basis of the assumption that the inner core has the same composition as the surrounding material of the outer core1. If, however, the observed increase in compressional velocity is related to a compositional change or, as suggested by Elsasser and Isenberg2, to a new phase of iron with rearranged electronic orbits, then the inner core might be liquid3. It was believed that conclusive evidence of solidity of the inner core would come from… 

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