Physics
Scientific paper
Aug 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.2327h&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 15, p. 2327-2330
Physics
44
Planetology: Solar System Objects: Moon, Planetology: Solid Surface Planets: Interiors, Planetology: Solid Surface Planets: Magnetic Fields And Magnetism
Scientific paper
Twenty-one orbits of Lunar Prospector magnetometer data obtained during an extended passage of the Moon through a lobe of the geomagnetic tail in April 1998 are applied to estimate the residual lunar induced magnetic dipole moment. Editing and averaging of individual orbit segments yields a negative induced moment with amplitude -2.4+/-1.6×1022Gauss-cm3 per Gauss of applied field. Assuming that the induced field is caused entirely by electrical currents near the surface of a highly electrically conducting metallic core, the preferred core radius is 340+/-90km. For an iron-rich composition, such a core would represent 1 to 3% of the lunar mass.
Acuña Mario Humberto
Binder Alan B.
Hood Lon L.
Lin Robert P.
Mitchell David Leroy
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