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Contour maps of lunar remanent magnetic fieldsThe 2605 usable orbits of Apollo 15 and 16 subsatellite magnetometer data have been reexamined for intervals suitable for analysis of crustal magnetic anomalies. To minimize plasma-related disturbances, segments from 274 of these orbits were selected from times when the moon was either in a lobe of the geomagnetic tail or in the solar wind with the subsatellites in the lunar wake. External field contributions which remained in the selected intervals were minimized by (1) quadratic detrending of individual orbit segments with lengths much greater than anomaly wavelengths and (2) two-dimensional filtering with minimum passed wavelengths less than or equal to anomaly wavelengths. Improvements in coverage, accuracy, and resolution of previously published anomaly maps produced from these data are obtained. In addition to improved maps of the Reiner Gamma and Van de Graaff-Aitken anomalies studied previously, a third region of relatively high-amplitude anomalies centered near the crater Gerasimovich on the southeastern far side has been mapped. Both the Van de Graaff-Aitken region and the Gerasimovich region are marked by the general occurrence of extensive groups of Reiner Gamma-type swirls.
Document ID
19810039719
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hood, L. L.
(Arizona, University Tucson, Ariz., United States)
Russell, C. T.
(Arizona Univ. Tucson, AZ, United States)
Coleman, P. J., Jr.
(California, University Los Angeles, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
February 10, 1981
Publication Information
Publication: Journal of Geophysical Research
Volume: 86
Subject Category
Lunar And Planetary Exploration
Accession Number
81A24123
Funding Number(s)
CONTRACT_GRANT: NGR-05-007-351
CONTRACT_GRANT: NSG-7020
Distribution Limits
Public
Copyright
Other

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