Mapping of crustal magnetic anomalies on the lunar near side by the Lunar Prospector electron reflectometer

J. S Halekas; D. L Mitchell; R. P Lin; S Frey; L. L Hood; M. H Acuna; A. B Binder

doi:10.1029/2000JE001380

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Mapping of crustal magnetic anomalies on the lunar near side by the Lunar Prospector electron reflectometer

Journal article

Open access

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Mapping of crustal magnetic anomalies on the lunar near side by the Lunar Prospector electron reflectometer

J. S Halekas, D. L Mitchell, R. P Lin, S Frey, L. L Hood, M. H Acuna and A. B Binder

Journal of Geophysical Research, Vol.106(E11), pp.27,841-27,852

31st Lunar and Planetary Science Conference

11/25/2001

DOI: 10.1029/2000JE001380

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Abstract

Lunar Prospector (LP) electron reflectometer measurements show that surface fields are generally weak in the large mare basalt filled impact basins on the near side but are stronger over highland terranes, especially those lying antipodal to young large impact basins. Between the Imbrium and Nectaris basins, many anomalies correlate with the Cayley and Descartes Formations. Statistical analyses show that the most strongly magnetic nearside terranes are Cayley-type light plains, terra materials, and pre-Imbrian craters. Light plains and terrae include basin impact ejecta as a major component, suggesting that magnetization effects from basin-forming impacts were involved in their formation. The magnetization of pre-Imbrian craters, however, may be evidence of early thermal remanence. Relatively strong, small-scale magnetic anomalies are present over the Reiner Gamma feature on western Oceanus Procellarum and over the Rima Sirsalis rille on the southwestern border of Procellarum. Both Apollo subsatellite and LP data show that the latter anomaly is nearly aligned with the rille, though LP magnetometer and reflectometer data show that the anomaly peak is actually centered over a light plains unit. This anomaly and the Reiner Gamma anomaly are approximately radially aligned with the center of Imbrium, suggesting an association with ejecta from this basin. Copyright 2001 by the American Geophysical Union.

Data Acquisition

Data Processing

Remote Sensing

Cayley Formation

correlation

Descartes Formation

ejecta

electron reflectometry data

Extraterrestrial geology

Fra Mauro

geophysical methods

impact features

impacts

interpretation

lunar craters

lunar crust

Lunar Prospector Program

magnetic anomalies

magnetic field

magnetic properties

magnetization

mapping

maria

Moon

Oceanus Procellarum

paleomagnetism

reflectance

Reiner Gamma Formation

Rima Sirsalis

satellite methods

spatial variations

statistical analysis

statistical distribution

terranes

Details

Title: Subtitle: Mapping of crustal magnetic anomalies on the lunar near side by the Lunar Prospector electron reflectometer
Creators: J. S Halekas - University of California at Berkeley, Space Sciences Laboratory Berkeley, CA USA United States
D. L Mitchell
R. P Lin
S Frey
L. L Hood
M. H Acuna
A. B Binder
Contributors: Clive R Neal (Editor) - University of Notre Dame
Resource Type: Journal article
Publication Details: Journal of Geophysical Research, Vol.106(E11), pp.27,841-27,852
Conference: 31st Lunar and Planetary Science Conference
Publisher: American Geophysical Union
DOI: 10.1029/2000JE001380
ISSN: 0148-0227
eISSN: 2156-2202
Alternative title: New views of the Moon; Part 3, The nature and evolution of the Moon from surface to core, a series of papers related to the lunar science initiative "New views of the Moon enabled by combined remotely sensed and lunar sample data sets"
Language: English
Date published: 11/25/2001
Academic Unit: Physics and Astronomy
Record Identifier: 9984199835302771

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