Publication at Faculty of Mathematics and Physics |
2019
Abstract
The magnetic field induced in the Earth's ocean by the large-scale global circulation consists of the toroidal and poloidal modes. Lateral variations of the ocean electrical conductivity allow for the energy exchange between both regimes.
In this paper, we predict that the eastward component of the toroidal magnetic field in the area of the Antarctic Circumpolar Current can reach amplitudes of 15 nT at the depth of about 1800 m. Moreover, even though the toroidal field is invisible on the ocean surface, it can significantly influence the observable poloidal field, both in terms of its amplitude, and seasonal variations. (C) 2019 Elsevier B.V.
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