Transport properties of liquid metals and viscosity of the earth's core

Details Transport properties of liquid metals and viscosity of the earth's core Transport properties of liquid metals and viscosity of the earth's core

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988geoj...92...99p&link_type=abstract

Geophysical Journal (ISSN 0952-4592), vol. 92, Jan. 1988, p. 99-105. CNRS-supported research.

Physics

71

Earth Core, Geophysical Fluids, Liquid Metals, Transport Properties, Geomagnetism, Latent Heat, Physical Properties, Seismic Waves

Scientific paper

Coefficients expressing transport properties of liquid metals (viscosity and diffusivity) can be scaled to the absolute melting temperature. A systematic review of the published experimental data leads to the conclusion that the effect of pressure on viscosity and diffusivity can be taken into account through its effect on the melting temperature. Hence the viscosity and diffusivity at the melting temperature are constants for a given metal. The viscosity of the earth's liquid core, near the inner core boundary, is probably close to 6 centipoises. It is suggested that the diffusivity of sulfur in the core is probably of the order of 0.0001 sq cm/sec.

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