The role of magnetic waves in tangent cylinder convection

• Published in: arXiv.org
• Main Authors: Majumder, Debarshi, Sreenivasan, Binod
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 10.10.2023
• Subjects: Axial flow; Convection; Dipoles; Dynamo theory; Earth core; Fluid flow; Geomagnetic field; Magnetic fields; Magnetohydrodynamic waves; Physics - Fluid Dynamics; Physics - Geophysics; Rayleigh number; Rotating cylinders; Rotating fluids; Rotating generators; Secular variations; Spherical shells; Spherical waves; Vortices

The secular variation of the geomagnetic field suggests that there are anticyclonic polar vortices in the Earth's core. Under the influence of a magnetic field, the polar azimuthal flow is thought to be produced by one or more coherent upwellings within the tangent cylinder, offset from the rot...