Model of a 6-Cell Geodynamo with Two Types of Cell Arrangement
摘要
In this paper, we obtain a model of a large-scale six-cell dynamo in the Earth’s core. The six-jet model can be obtained either through the poloidal velocity mode \(\textbf{v}^P_{0,4,\pm 2}\) or through the poloidal velocity mode \(\textbf{v}^P_{0,4,\pm 3}\) . We present a general combined model of the kinematic dynamo, which contains one combined velocity mode that approximates one of the modes of the Poincaré operator. Fourteen magnetic induction modes are also composed, two of which are dipoles, and the remaining structures constitute a component of the combined velocity mode. To achieve stable generation within this class of models, \(\textbf{v}^P_{0.4,\pm 2}\) must dominate. The situation of \(\textbf{v}^P_{0,4,\pm 3}\) dominance, in which growth fields can only be suppressed by suppressing the \(\alpha \) -effect, is not of interest to the present study. Therefore, \(\textbf{v}^P_{0,4,\pm 2}\) must be the main mechanism.