NASA is actively monitoring a strange anomaly in Earth's magnetic field: a giant region of lower magnetic intensity in the skies above the planet, stretching out between South America and southwest Africa.
inside Earth's outer core, thousands of kilometers below the ground. The movement of that mass generates electrical currents that create Earth's magnetic field, but not necessarily uniformly, it seems., located about 2,900 kilometers below the African continent, disturbs the field's generation, resulting in the dramatic weakening effect – which is aided by the tilt of the planet's magnetic axis.
It's not just moving, however. Even more remarkably, the phenomenon seems to be in the process of splitting in two, with researchers in 2020 discovering that the SAA, each representing a separate center of minimum magnetic intensity within the greater anomaly. A study published in July 2020 suggested the phenomenon is not a freak event of recent times, but a recurrent magnetic event that may have affected EarthIf so, that could signal that the South Atlantic Anomaly is not a trigger or precursor to the, which is something that actually happens, if not for hundreds of thousands of years at a time.
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