South Atlantic Anomaly

When evaluating the Earth magnetic field, immediately the South Atlantic Anomaly becomes clear. Wikipedia describes it this way: 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 kilometers (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 effect is caused by the non-concentricity of the Earth and its magnetic dipole. The SAA is[…]

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