Eigenschaften und Skalierungsgesetze von Strong-Field Dynamos

• Applicant: Professor Dr. Ulrich Hansen
• Subject Area: Geophysics
• Term: from 2005 to 2011
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 5450948

• Final Report Year: 2015

Final Report Abstract

The scaling laws found in our study allow a-priori predictions of the dynamical importance of Coriolis forces for a given system. Application to the Earth’s core for example suggests that it is controlled by rotation, but much closer to the transition point than previously expected. Future studies, incorporating additional dynamical effects such as fluid compressibility, low Prandtl number, magnetic fields and more complicated geometries are necessary to account for the individual characteristics of specific natural systems.

Publications

• (2009). Boundary layer control of rotating convection systems. Nature, 457, 301–304
  King, E. M., Stellmach, S., Noir, J., Hansen, U., and Aurnou, J. M.