Earth sustains its magnetic field by a dynamo process driven by convection in the liquid
outer core. Geodynamo simulations have been successful in reproducing many observed …

Abstract This Special Topic focuses on magnetohydrodynamic (MHD) processes in the deep
interiors of planets, in which their fluid dynamos are in operation. The dynamo-generated …

We present the first detailed thermal and velocity field characterization of convection in a
rotating cylindrical tank of liquid gallium, which has thermophysical properties similar to …

We investigate the normal modes of a rapidly rotating, electrically conducting, inviscid fluid
sphere in the presence of a background magnetic field. Neglecting the fast modes that are …

Helicity plays an important role in spectacular geophysical phenomena such as hurricanes
or the generation of the terrestrial magnetic field. The present investigation shows how …

We present dynamos computed using a hybrid QG-3D numerical scheme in a thick spherical
shell geometry. Our model is based on a quasi-geostrophic convection code extended with …

Kinetic helicity and its spatial distribution are thought to be important for the maintenance of
a dipolar magnetic field in the geodynamo through the α-effect. Outside the inner core …

We consider a rapidly rotating, Boussinesq fluid stirred by buoyant anomalies. In such a
system it is known that, in the absence of a magnetic field, inertial waves whose wave …

The distribution of kinetic helicity in a dipolar planetary dynamo is central to the success of
that dynamo. Motivated by the helicity distributions observed in numerical simulations of the …

Inertial waves are oscillations in a rotating fluid, such as the Earth's outer core, which result
from the restoring action of the Coriolis force. In an earlier work, it was argued by Davidson …