Earth's core may have recently stopped spinning. In this video, I cover the data that drove this hypothesis, why Earth's core might rotate independently of Earth's mantle, what caused Earth's core to nearly stop rotating, and what consequences the pause in Earth's core rotation may have on Earth's climate, length of the day, and magnetic field.
References:
1. Song and Yang, 2023: https://doi.org/10.1038/s41561-022-01112-z
2. Tkalcic et al., 2013: https://www.nature.com/articles/ngeo1813
3. Song & Richards, 1996: https://doi.org/10.1038%2F382221a0
4. Buffett & Glatzmaier, 2000: https://doi.org/10.1029%2F2000GL011705
5. Aurnou & Olson, 2000: https://doi.org/10.1016%2FS0031-9201%2899%2900091-6
6. Buffett, 1996: https://doi.org/10.1029%2F96GL02083
7. Buffett & Creager, 1999: https://doi.org/10.1029%2F1999GL900271
8. Davies et al., 2014: https://doi.org/10.1002%2F2014GL059836
9. Schlesinger & Ramankutty, 1994: https://doi.org/10.1038%2F367723a0
10. Gervais, 2016: https://doi.org/10.1016%2Fj.earscirev.2016.02.005
11. Zotov et al., 2016: https://doi.org/10.1016/j.geog.2016.05.005
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0:00 Video topic & outline
0:33 How Earth’s layers formed
1:35 Has Earth’s core stopped spinning?
4:15 How we study the inner core’s rotation
6:36 Proposed core oscillation cycle
8:26 Cause of core rotation change?
9:51 Can this affect the length of days?
11:00 Can this affect climate?
12:05 Overall conclusions
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