Recent research reveals that the Earth's inner core is undergoing changes in shape, contradicting prior notions of its stability. Scientists analyzed earthquake shockwaves to uncover that the turbulence of the molten outer core impacts the inner core, which has been slowing down in its rotation over recent years. This groundbreaking discovery utilizes seismic data from repeat earthquakes to model the Earth's complex internal structure, shedding light on geological processes previously thought unrelated.
The molten outer core is widely known to be turbulent, but its turbulence had not been observed to disrupt its neighbour the inner core on a human timescale.
What we're observing in this study for the first time is likely the outer core disturbing the inner core.
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