Mystery Type: Phenomenon
Mystery Name: South Atlantic Anomaly
Place Name: South Atlantic Anomaly
The South Atlantic Anomaly (SAA) is an area where the Earth’s inner Van Allen radiation belt comes closest to the Earth’s surface, dipping down to an altitude of 200 kilometres (120 mi). This leads to an increased flux of energetic particles in this region and exposes orbiting satellites to higher-than-usual levels of radiation. The suspected culprit for this anomaly is a patch of reversed polarity beneath southern Africa at the core-mantle boundary where the liquid iron outer core meets the slightly stiffer part of the Earth’s interior. In this area, the polarity of the field is opposite to the average global magnetic field. If we were able to use a compass deep under southern Africa, we would see that in this unusual patch north actually points south.
This patch is the main culprit creating the South Atlantic Anomaly. In numerical simulations, unusual patches similar to the one beneath southern Africa appear immediately prior to geomagnetic reversals.
The poles have reversed frequently over the history of the planet, but the last reversal is in the distant past, some 780,000 years ago. The rapid decay of the recent magnetic field, and its pattern of decay, naturally raises the question of what was happening prior to the last 160 years.
The PAMELA experiment, while passing through the SAA, detected antiproton levels that were orders of magnitude higher than expected. This suggests the Van Allen belt confines antiparticles produced by the interaction of the Earth’s upper atmosphere with cosmic rays. NASA has reported that modern laptops have crashed when Space Shuttle flights passed through the anomaly.
To which other mysteries is it related to?, Is it related to an upcoming pole-shift?, Did this Anomaly already influence ancient Cultures?, Is this Anomaly linked to the Earthgrid and Leylines?
Proven Facts: Strong measurable geomagnetic Anomaly
Type: Electromagnetical Phenomenon
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This mystery has been reported by Jahkri on 02/15/2017
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