Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46678 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Geostrophic balance and reversals of the geomagnetic field Geostrophic balance and reversals of the geomagnetic field Reshetnyak M Yu Reshetnyak M Yu Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Moscow, Russia ru Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Moscow, Russia ru 13 1 1 6 29 10 2021 https://rjes.ru/en/nauka/article/46678/view

The 3D geodynamo model in the rapidly rotating spherical shell with heating from below is considered. We show that correlation of the geomagnetic dipole with total magnetic energy in the core depends on the forces balance in the dynamo system. As a result, reversals of the field not always reflect essential changes of the magnetic energy in the core. This result is closely related to the slow decay of the magnetic spectrum at the surface of the core, and in the bulk of the liquid core, especially.

The 3D geodynamo model in the rapidly rotating spherical shell with heating from below is considered. We show that correlation of the geomagnetic dipole with total magnetic energy in the core depends on the forces balance in the dynamo system. As a result, reversals of the field not always reflect essential changes of the magnetic energy in the core. This result is closely related to the slow decay of the magnetic spectrum at the surface of the core, and in the bulk of the liquid core, especially.

 Earth's liquid core turbulence geodynamo Earth's liquid core turbulence geodynamo

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