A lunar core and the moon's magnetic field

Details A lunar core and the moon's magnetic field A lunar core and the moon's magnetic field

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975moon...12..401k&link_type=abstract

The Moon, vol. 12, Apr. 1975, p. 401-406.

Astronomy and Astrophysics

Astronomy

1

Convective Flow, Lunar Core, Lunar Magnetic Fields, Magnetohydrodynamic Flow, Astronomical Models, Basalt, Dynamo Theory, Liquid Metals, Lunar Rocks, Mineralogy, Remanence

Scientific paper

The suggestion that the moon's magnetic field is due to adiabatic magnetohydrodynamic convection of a molten core has been made by a number of recent authors. Considerations based on petrology, mass and rotational inertia limit the size of this hypothetical core to a few hundred kilometers at the most. A proposal has been made that this core is either molten iron or iron sulfide. The properties are known of both molten iron and iron-sulfide at lunar core pressures. No way can be found to maintain circulation in a hypothetical lunar core, as circulation is contingent upon a temperature gradient being greater than the adiabatic gradient, or an internal heat source.

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