2021
DOI: 10.48550/arxiv.2101.01493
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Fast Quasi-Geostrophic Magneto-Coriolis Modes in the Earth's core

Felix Gerick,
Dominique Jault,
Jerome Noir

Abstract: Magneto-Coriolis modes of periods close to torsional Alfvén modes could be present in Earth's core model without stratification.• The magnetic field changes of such modes show properties similar to geomagnetic observations, with fast changes localized near the equator. • Our model could allow core-flow inversions from geomagnetic field data to the flow and simultaneously the magnetic field within the core.

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