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A new turn for Earth's rotation

Earth's spin rate varies with time. A six-year periodic signal in the planet's core is partly responsible, and increases the interior magnetic-field strength to much higher levels than previously thought.

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Figure 1: The quasi-geostrophic model of Earth's core.


  1. Abarca del Rio, R., Gambis, D. & Salstein, D. A. Ann. Geophys. 18, 347–364 (2000).

    Article  ADS  Google Scholar 

  2. Gillet, N., Jault, D., Canet, E. & Fournier, A. Nature 465, 74–77 (2010).

    Article  ADS  CAS  Google Scholar 

  3. Jault, D. Phys. Earth Planet. Inter. 166, 67–76 (2008).

    Article  ADS  Google Scholar 

  4. Jault, D., Gire, C. & Le Mouël, J. Nature 333, 353–356 (1988).

    Article  ADS  Google Scholar 

  5. Braginsky, S. I. Geomag. Aeron. 10, 1–8 (1970).

    Google Scholar 

  6. Zatman, S. & Bloxham, J. Nature 388, 760–763 (1997).

    Article  ADS  Google Scholar 

  7. Buffett, B. A. et al. Geophys. J. Int. 177, 878–890 (2009).

    Article  ADS  Google Scholar 

  8. Mound, J. E. & Buffett, B. A. Earth Planet. Sci. Lett. 243, 383–389 (2006).

    Article  ADS  CAS  Google Scholar 

  9. Jackson, A. Phys. Earth Planet. Inter. 103, 293–311 (1997).

    Article  ADS  Google Scholar 

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Jackson, A. A new turn for Earth's rotation. Nature 465, 39–40 (2010).

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