There is an interesting discussion in the comments following this.
http://phys.org/news/2012-07-deflector- ... rface.html
The anomalous magnetic fields appear almost symmetrically on opposite sides of the Moon.sjw40364 wrote:You notice that these spots on the moon face earth because of the Earth moon connection just as Jupiter and its moons and Saturn and its moons leave aural footprints. If earth was bigger you would be able to see the moons imprint in our aurora too. That is the current path between Earth and the moon.
Maybe it is a result of some remnant magnetism derived from a catastrophic past? Who knows.Dotini wrote:The anomalous magnetic fields appear almost symmetrically on opposite sides of the Moon.sjw40364 wrote:You notice that these spots on the moon face earth because of the Earth moon connection just as Jupiter and its moons and Saturn and its moons leave aural footprints. If earth was bigger you would be able to see the moons imprint in our aurora too. That is the current path between Earth and the moon.
http://lh4.ggpht.com/_YoCIFkM3GQ8/S4frT ... 00x279.png
Is this a necessary artifact of the current path? I believe the Moon is not currently considered to be a magnetic dipole.
Respectfully submitted,
Steve
Minimagnetospheres above the Lunar Surface and the Formation of Lunar Swirls
http://prl.aps.org/abstract/PRL/v109/i8/e081101
In this paper we present in situ satellite data, theory, and laboratory validation that show how small-scale collisionless shocks and minimagnetospheres can form on the electron inertial scale length. The resulting retardation and deflection of the solar wind ions could be responsible for the unusual “lunar swirl” patterns seen on the surface of the Moon.

Article with video is here:Minimagnetospheres above the Lunar Surface and the Formation of Lunar Swirls
http://prl.aps.org/abstract/PRL/v109/i8/e081101


http://www.thunderbolts.info/tpod/2011/ ... malies.htmRecent maps of lunar magnetic anomalies reveal several other formations of high albedo material also associated with areas of crustal magnetism imprinted on the lunar surface. Descartes, the Apollo 16 landing site, possesses a prominent magnetic signature. Powdery swirls in Gerasimovich crater, on the Moon's far side, are estimated to be less than five centimeters thick. Gerasimovich is also notable for its magnetic attribute.
Latent magnetic fields in Mare Marginis and Mare Ingenii were measured by the Lunar Prospector spacecraft in the 1990s. Measurements of the remanent magnetism in the lunar crust were taken by observing the magnetic reflection of electrons from the Moon’s surface. The differences are small, but the evidence points to a variable strength magnetic field imprinted on the Moon. Since magnetism is a result of electrical currents, then the swirling pattern of the various formations could be due to an external electrical influence.
Lightning-induced remanent magnetism (LIRM) is a phenomenon that appears to be commonly encountered on archaeological sites, but rarely recognized in magnetic survey data. Strong bipolar anomalies of linear, radial, or dendritic form appearing in magnetic data plots have sometimes been interpreted as ferrous metal or igneous intrusions. A number of these enigmatic anomalies have appeared in magnetic field gradient surveys conducted by the authors as well as by other investigators. Several of these were investigated by coring and hand excavation, but no apparent sources for these anomalies could be found. The lack of visible anomaly sources and polarities not aligned to the geomagnetic field (either past or present) suggested lightning strikes as a possible cause of magnetization.

Source:-Observed magnetic gradient anomalies have ranged from beyond the maximum range of the instrument (+/-2047.5 nT) to a few tenths of a nT, only faintly perceptible in even the quietest data set. We suggest that lightning-induced anomalies may initially display a very high remanence, but may diminish with time. As individual sediment grains are re-oriented by turbation processes, vector subtraction of increasingly randomised magnetic moments will eventually reduce the net remanence to zero. Unlike lightning-induced anomalies, those due to thermal features can remain detectable indefinitely because of enhanced magnetic susceptibility.
Did inter-planetary thunderbolts help create the "lumpy" gravitational field of the Moon? The question remains open."What happened? The Moon itself plunged the subsatellite to its death. That's the conclusion of Alex S. Konopliv, planetary scientist at NASA's Jet Propulsion Laboratory in Pasadena."
"The Moon is extraordinarily lumpy, gravitationally speaking," Konopliv continues. "I don't mean mountains or physical topography. I mean in mass. What appear to be flat seas of lunar lava have huge positive gravitational anomalies—that is, their mass and thus their gravitational fields are significantly stronger than the rest of the lunar crust." Known as mass concentrations or "mascons," there are five big ones on the front side of the Moon facing Earth, all in lunar maria (Latin for "seas") and visible in binoculars from Earth."
http://science.nasa.gov/science-news/sc ... _loworbit/


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