Electrical resistivity of the core

Details Electrical resistivity of the core Electrical resistivity of the core

Sep 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971pepi....4..406g&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 4, Issue 5, p. 406-410.

Physics

11

Scientific paper

Values of electrical resistivity and its temperature coefficient for liquid iron and its alloys by B. A. Baum et al. (1967) are combined with P. W. Bridgman's (1957) data on the pressure coefficients of resistivity in solid iron alloys and are extrapolated to pressures, temperatures and probable compositions for the Earth's core. The results are grouped around the average value assumed by E. C. Bullard (1949), 3 × 10-6 ω . m, and therefore support its validity. However, remaining uncertainties leave the plausible range as 1 to 6 × 10-6 ω . m. The calculated depth dependence of resistivity is negligible.

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