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Scientists are puzzled over why Earth's core keeps growing all lopsided - SYFY WIRE
Jun 14, 2021 42 secs

According to their open access report recently published in the online journal Nature Geoscience, the solid inner core is losing heat more rapidly beneath Indonesia than it is under Brazil, and that's messing with seismic waves passing through it to create a sort of “lopsided“ growth pattern. .

The witnessed enlargement seems to be caused by new iron crystals forming faster on the east side of the core versus the west.

Another conundrum occurs when considering if misguided cooling in the inner core might change Earth's magnetic field, something that’s currently activated by movements of liquid iron inside the outer core, which is in turn generated from lost heat from the inner core. 

“If the inner core is losing more heat in the east than the west, then the outer core will move more in the east too,” Frost added

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