Earth’s inner core, with Dr Jessica Irving
Instant Genius
00:00
What Causes Differential Rotation of Earth's Inner Core?
Earth's magnetic field is a geodinomoe, generated by this molten iron moving in Earth's outer core. It extends way out beyond the core and you can see it in space. But there are twisting or toroidal elements of that field which might actually shove the inner core to twist it slightly. And so we've got this huge battle at play right in the centre of our planet between these different forces that are acting in different ways.
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