Inner Core Anisotropy Due to the Magnetic Field--induced Preferred Orientation of Iron.

Abstract

Anisotropy of the inner core of the Earth is proposed to result from the lattice preferred orientation of anisotropic iron crystals during their solidification in the presence of a magnetic field. The resultant seismic anisotropy is related to the geometry of the magnetic field in the core. This hypothesis implies that the observed anisotropy (fast velocity… (More)

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