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Lunar magnetism and an early cold moonModels of lunar magnetism have involved dynamo action in a fluid core in an early hot moon; an early cold moon magnetized some time before 4 billion years ago, which has subsequently heated up; and local field sources which, in some models, are related to impact. The present work examines the second possibility and shows 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.
Document ID
19740048526
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Strangway, D. W.
(NASA Johnson Space Center Houston Tex., United States)
Sharpe, H. A.
(Lunar Science Institute, Houston, Tex.; Toronto, University Toronto, Canada)
Date Acquired
August 7, 2013
Publication Date
May 17, 1974
Publication Information
Publication: Nature
Volume: 249
Subject Category
Space Sciences
Accession Number
74A31276
Distribution Limits
Public
Copyright
Other

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