Predictability of Magnetic Field Reversals

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Tolmachev, D (Author) Other; Chertovskih, R (Author) FEUP; Jeyabalan, SR (Author) Other; Zheligovsky, V (Author) Other

Journal

Title: Mathematics

Vol. 12

Final page: 490

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus

Other information

Authenticus ID: P-00Z-WYC

DOI: 10.3390/math12030490

Abstract (EN): Geomagnetic field measurements indicate that at present we may be on the brink of the Earth's magnetic field reversal, potentially resulting in all the accompanying negative consequences for the mankind. Mathematical modelling is necessary in order to find precursors for reversals and excursions of the magnetic field. With this purpose in mind, following the Podvigina scenario for the emergence of the reversals, we have studied convective flows not far (in the parameter space) from their onset and the onset of magnetic field generation, and found a flow demonstrating reversals of polarity of some harmonics comprising the magnetic field. We discuss a simulated regime featuring patterns of behaviour that apparently indicate future reversals of certain harmonics of the magnetic field. It remains to be seen whether reversal precursors similar to the observed ones exist and might be applicable for the much more complex geomagnetic dynamo.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 20