A deep dynamo generating Mercury’s magnetic field

  title={A deep dynamo generating Mercury’s magnetic field},
  author={Ulrich R. Christensen},
Mercury has a global magnetic field of internal origin and it is thought that a dynamo operating in the fluid part of Mercury’s large iron core is the most probable cause. However, the low intensity of Mercury’s magnetic field—about 1% the strength of the Earth’s field—cannot be reconciled with an Earth-like dynamo. With the common assumption that Coriolis and Lorentz forces balance in planetary dynamos, a field thirty times stronger is expected. Here I present a numerical model of a dynamo… 
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