165 citations · 660 across the 23 of their papers we have counts for
4 papers · 1 filter
Helicity inversion in spherical convection as a means for equatorward dynamo wave propagation
Lúcia D. V. Duarte, Johannes Wicht, Matthew K. Browning +1
We discuss here a purely hydrodynamical mechanism to invert the sign of the kinetic helicity, which plays a key role in determining the direction of propagation of cyclical magneti…
Effect of width, amplitude, and position of a core mantle boundary hot spot on core convection and dynamo action
Wieland Dietrich, Johannes Wicht, Kumiko Hori
Within the fluid iron cores of terrestrial planets, convection and the resulting generation of global magnetic fields are controlled by the overlying rocky mantle. The thermal stru…
Turbulent Rayleigh-Bénard convection in spherical shells
T. Gastine, J. Wicht, J. M. Aurnou
We simulate numerically Boussinesq convection in non-rotating spherical shells for a fluid with a unity Prandtl number and Rayleigh numbers up to . In this geometry, curvatur…
A Gaussian Model for Simulated Geomagnetic Field Reversals
Johannes Wicht, Domenico Meduri
Field reversals are the most spectacular changes in the geomagnetic field but remain little understood. Paleomagnetic data primarily constrain the reversal rate and provide few add…