Interplay between rotational and magnetic mechanisms in generating large scales

Ascertain how large-scale structures in the Tangent Cylinder arise from the interplay between rotation-driven geostrophic turbulence and magnetohydrodynamic mechanisms that promote large scales, and determine how these two mechanisms coexist or compete under core-relevant conditions.

Background

The authors discuss that magnetohydrodynamic (MHD) turbulence and rotating convection can each favor large-scale structures via nonlinear energy transfer and scale-selective dissipation. In planetary cores, both rotation and strong magnetic fields are present, potentially enabling multiple pathways for large-scale structure formation.

While LEE2’s present study focuses on non-magnetic rotating convection, the broader geophysical context requires understanding how rotational and magnetic effects jointly shape large-scale dynamics within the Tangent Cylinder.