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Magnetism and the interior of the moonDuring the time period 1961-1972, 11 magnetometers were sent to the moon. The primary purpose of this paper is to review the results of lunar magnetometer data analysis, with emphasis on the lunar interior. Magnetic fields have been measured on the lunar surface at the Apollo 12, 14, 15, and 16 landing sites. The remanent field values at these sites are 38, 103 (maximum), 3, and 327 gammas (maximum), respectively. Simultaneous magnetic field and solar plasma pressure measurements show that the Apollo 12 and 16 remanent fields are compressed during times of high plasma dynamic pressure. Apollo 15 and 16 subsatellite magnetometers have mapped in detail the field above portions of the lunar surface and have placed an upper limit on the global permanent dipole moment. Satellite and surface measurements show strong evidence that the lunar crust is magnetized over much of the lunar globe. Magnetic fields are stronger in highland regions than in mare regions and stronger on the lunar far side than on the near side. The largest magnetic anomaly measured to date is between the craters Van de Graaff and Aitken on the lunar far side.
Document ID
19750032420
Document Type
Reprint (Version printed in journal)
Authors
Dyal, P. (NASA Ames Research Center Moffett Field, Calif., United States)
Parkin, C. W. (Santa Clara, University Santa Clara, Calif., United States)
Daily, W. D. (Brigham Young University Provo, Utah, United States)
Date Acquired
August 8, 2013
Publication Date
November 1, 1974
Publication Information
Publication: Reviews of Geophysics and Space Physics
Volume: 12
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NGR-05-017-027
CONTRACT_GRANT: NGR-45-001-040
Distribution Limits
Public
Copyright
Other