The inner core has the intriguing property that seismic waves traveling parallel to the Earth's
spin axis arrive earlier than those traveling parallel to the equatorial plane. The travel time is …

The inner core is a planet within a planet: a hot sphere with a mass of one hundred
quintillion tons of iron and nickel that lies more than 5000 kilometres beneath our feet. It …

The properties of the inner core (1C) of the Earth are widely assumed to be consistent with
those of pure, solid iron in the hexagonal close-packed (ε) phase. This hypothesis is re …

We present a growth tectonic model of Earth's inner core and the resulting model of the
seismic anisotropy. The inner core grows anisotropically if the convection in the outer core is …

The core of the Earth is usually described by sphericallysymmetrical velocity models. The
core is made of two main spherical layers: the fluid outer core with a radius close to 3,480 …

Seismic waves have long been known to attenuate at a rate greater than that predicted by
geometric spreading of their wave fronts. Knopoff (1964) pointed out more than four decades …

Seismic waves that traverse Earth's inner core along north-south paths produce unusually
broad pulse shapes at long periods (compared with waves along east-west paths) and …

A systematic search of short-period GDSN seismograms from 1980 to 1984 at ranges from
20° to 90° identifies two probable PKiKP arrivals. PKiKP/PcP amplitude ratios for these …

The LMTO method is used to calculate the electronic band structure of iron in the ϵ-phase
(hcp) and in the γ-phase (fcc) for seven compressions from 4 to 980 GPa. The electronic …

The velocity profile at the base of the core is derived from the mean travel time of the PKP
(BC+ Cdiff) data collected by the International Seismological Centre. PKP (BC) corresponds …