Lunar magnetism and an early cold Moon

Details Lunar magnetism and an early cold Moon Lunar magnetism and an early cold Moon

May 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974natur.249..227s&link_type=abstract

Nature, Volume 249, Issue 5454, pp. 227-230 (1974).

Physics

5

Scientific paper

Models of lunar magnetism have involved dynamo action in a fluid core in an early hot Moon; an early cold Moon magnetised some time before 4.0 × 109 yr ago, which has subsequently heated up; and local field sources which, in some models, are related to impact. Here we examine the second possibility and show that provided the Moon contained a few percent of metallic iron and was exposed to an extra-Lunar field of about 10 or 20 oersted while much of it was still below the Curie point of iron, a restricted class of thermal evolution models, which satisfy the known constraints, can be derived.

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