Physics
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984geosu...7...57c&link_type=abstract
Geophysical Surveys (ISSN 0046-5763), vol. 7, Dec. 1984, p. 57-73.
Physics
6
Lunar Magnetic Fields, Lunar Rocks, Paleomagnetism, Remanence, Breccia, Dynamo Theory, Igneous Rocks, Lunar Evolution, Magnetization, Polar Wandering (Geology)
Scientific paper
The characteristics of the remanent magnetism of lunar samples suggests that it was acquired in a magnetic field on the Moon. The most likely origin of the field is a dynamo process in a molten, electrically-conducting core, but generation of a transient magnetic field during large meteorite impacts cannot be entirely ruled out. Evidence from absolute and relative determinations of the ancient field strength from the sample magnetizations strongly favours a global lunar field. Contributory evidence for a dynamo field is provided by measurements of present lunar surface fields, the present very small dipole moment of the Moon and accumulating evidence of variation of the axis of the lunar field with time.
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