Reversals in the six-jet geodynamo model
Vestnik KRAUNC. Fiziko-matematičeskie nauki, no. 3 (2016), pp. 23-28 Cet article a éte moissonné depuis la source Math-Net.Ru

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We describe a large-scale geodynamo model based on hypothesis about 6-jet convection in the Earth's core. This hypothesis suggests indirect data of inhomogeneities in the density of the Earth's core. The convection pattern is associated with a spherical harmonic Y24 which defines the basic poloidal component of velocity. The model takes into account the feedback effect of the magnetic field on convection. It was ascertained that the model contains stable regimes of field generation with reversals. The velocity of convection and the dipole component of the magnetic field are similar to the observed ones.
Keywords: geodynamo, Earth's core, geomagnetic reversals.
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G. M. Vodinchar; L. K. Feshenko. Reversals in the six-jet geodynamo model. Vestnik KRAUNC. Fiziko-matematičeskie nauki, no. 3 (2016), pp. 23-28. http://geodesic.mathdoc.fr/item/VKAM_2016_3_a2/

[1] C. A. Jones, “Convection{\textendash}driven geodynamo models”, Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences, 358:1768 (2000), 873–897 | DOI | MR | Zbl

[2] M. Kono, P. H. Roberts, “Recent Geodynamo simulations and observations of the geomagnetic field”, Reviews of Geophysics, 40:4 (2002), 1013 | DOI | MR

[3] V. V. Kuznetsov, “Anizotropiya svoistv vnutrennego yadra Zemli”, Uspekhi fizicheskikh nauk, 167:9 (1997), 1001–1012 | DOI

[4] A. V. Gorelikov, A. S. Fokin, “Chislennoe issledovanie nekotorykh nestatsionarnykh rezhimov estestvennoy konvektsii vo vrashchayushchemsya sfericheskom sloe”, Vychislitel'naya mekhanika sploshnoy sredy, 5:2 (2012), 184–196 | DOI

[5] G. M. Vodinchar, L. K. Feshchenko, “Model of Geodynamo driven by six-jet convection in the Earth's core”, Magnetohydrodynamics, 52:1 (2016), 287–300 | DOI

[6] D. D. Sokolov, S. N. Nefedov, “Malomodovoe priblizhenie v zadache zvezdnogo dinamo”, Vychislitel'nye metody i programmirovanie, 8 (2007), 195–204

[7] M. Yu. Reshetnyak, Modelirovanie protsessov dinamo v geofizike, diss. ... dokt. fiz.-matem. nauk, Moskva, 2003, 302 pp.

[8] A. P. Anufriev, M. Yu. Reshetnyak, D. D. Sokolov, “Otsenka dinamo-chisla v modeli turbulentnogo $\alpha$-effekta dlya zhidkogo yadra Zemli”, Geomagnetizm i aeronomiya, 37 (1997), 141–146

[9] R. T. Merril, M. W. McElhinny, P. L. McFadden, The Magnetic Field of the Earth: Paleomagnetism, the Core, and the Deep Mantle, Academic Press, London, 1996