The Moon: Sources of the Crustal Magnetic Anomalies

  title={The Moon: Sources of the Crustal Magnetic Anomalies},
  author={Lon L. Hood and PAUL J. Coleman and Don E. Wilhelms},
  pages={53 - 57}
Previously unmapped Apollo 16 subsatellite magnetometer data collected at low altitudes over the lunar near side are presented. Medium-amplitude magnetic anomalies exist over the Fra Mauro and Cayley Formations (primary and secondary basin ejecta emplaced 3.8 to 4.0 billion years ago) but are nearly absent over the maria and over the craters Copernicus, Kepler, and Reiner and their encircling ejecta mantles. The largest observed anomaly (radial component ∼21 gammas at an altitude of 20… 
Mapping of crustal magnetic anomalies on the lunar near side by the Lunar Prospector electron reflectometer
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
Contour maps of lunar remanent magnetic fields
The 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
A study of the Rima Sirsalis lunar magnetic anomaly
Abstract The source of the lunar magnetic anomaly associated with the Rima Sirsalis linear rille has been modelled using the vector field intensities due to arbitrary uniform magnetization in a
Initial mapping and interpretation of lunar crustal magnetic anomalies using Lunar Prospector magnetometer data
Maps of relatively strong crustal magnetic field anomalies detected at low altitudes with the magnetometer instrument on Lunar Prospector are presented. On the lunar nearside, relatively strong
Magnetic field and remanent magnetization effects of basin-forming impacts on the Moon
Maps of the distribution of lunar surface magnetic fields produced by the electron reflection method have shown that the largest observed concentrations of lunar crustal magnetization occur antipodal
The enigma of lunar magnetism
The results of the Apollo program have given us an intriguing but very inadequate glimpse of the pervasive magnetization that characterizes the lunar crust. Returned sample studies, surface magnetic
Lunar surface magnetic field concentrations antipodal to young large impact basins
Abstract We find that the major regions of strong surface magnetic fields detected by planetary electron reflection magnetometry (PERM) measurements of the Apollo 15 and 16 subsatellites are located
How strong are lunar crustal magnetic fields at the surface?: Considerations from a reexamination of the electron reflectometry technique
[1] Despite extensive study, we do not yet fully understand the origins of the unique lunar crustal magnetism. The strength of surface fields and their relation to local geology are crucial pieces of


Magnetism and the interior of the Moon
During 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
Satellite measurements of the moon's magnetic field: A preliminary report
A preliminary analysis of the data from the UCLA magnetometer on board the Apollo 15 subsatellite indicates that remnant magnetization is a characteristic property of the Moon, that its distribution
The remanent magnetic field of the moon
  • P. J. Coleman, Jr, C. Russell
  • Geology
    Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
  • 1977
This paper is intended as a review of the empirical data on the remanent magnetic field of the Moon. These data are from direct measurements of the remanent field with magnetometers on the lunar
On the interpretation of lunar magnetism
Abstract It is proved that if a spherical shell is magnetized in the direction of and proportional to a magnetic field of origin internal to the shell and the magnetizing field later disappears, no
Laboratory simulation of the herringbone pattern associated with lunar secondary crater chains
V-shaped ridge components of the herringbone pattern associated with lunar secondary crater chains have been simulated by simultaneous and nearly simultaneous impact of two projectiles near one
Lunar Magnetic Field: Permanent and Induced Dipole Moments
Apollo 15 subsatellite magnetic field observations have been used to measure both the permanent and the induced lunar dipole moments, indicating the existence of a weak lunar ionosphere.
Computation with the help of a digital computer of magnetic anomalies caused by bodies of arbitrary shape
Formulas are derived for the magnetic anomalies caused by irregular polygonal laminas. These are used to obtain the three components of the magnetic anomalies caused by a finite homogeneously
Lunar and Planetary Science IX (Lunar and Planetary Institute
  • 1978
Weiss for numerous helpful and informative discussions. Supported by NASA grant