Small-scale structure of the geodynamo inferred from Oersted and Magsat satellite data

  title={Small-scale structure of the geodynamo inferred from Oersted and Magsat satellite data},
  author={G. Hulot and C{\'e}line Eymin and B. Langlais and M. Mandea and N. Olsen},
The ‘geodynamo’ in the Earth's liquid outer core produces a magnetic field that dominates the large and medium length scales of the magnetic field observed at the Earth's surface. Here we use data from the currently operating Danish Oersted satellite, and from the US Magsat satellite that operated in 1979/80, to identify and interpret variations in the magnetic field over the past 20 years, down to length scales previously inaccessible. Projected down to the surface of the Earth's core, we… Expand

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